Overview   |      Edeiology     |     Setting     |     History     |     NPCs

The Edeia originate from an "urban fantasy" world, a world much like ours but where magic has been revealed to humanity. Some areas in the world have more magic-related activities, and some areas remain almost completely mundane—in those places, people can go their entire lives without ever encountering a magical individual. 

The only form of magic that originates from this world is idea magic, magic from the power of an Idea. Any other kinds of magic and supernatural abilities come from entities from different dimensions,  often involving an Edeia bringing back an entity or object with that kind of magic.

Mundane society and magic societies still govern separately, but there have been advancements in innovation that use both science and magic—and both mundane and magical worlds have changed and intermixed.


This provides a brief overview of Ideation world history, which may be sufficient for general needs in character development. For more detailed world history, see the History page.

The Ancient Era / The Age of Magic

Up to sometime in the 1500s. 

There was no division; everyone lived with the fact that magic was real and something you had to deal with. "The Age of Magic" is often used for the time closer to the Age of Secrecy. 

In the very beginnings of civilization, humanity was very superstitious and believed in gods, spirits, demons, etc—though all of these were essentially Edeia. No one truly understood what Edeia were at first, but some Edeia who sought knowledge and understanding began to compile knowledge and theories. The term "Edeia" began being used around 2000 BCE, but only sparingly and usually only among the Edeia themselves.

As the years progressed, some societies/groups gained more understanding of idea magic, Edeia, and the process of Actualization, while others did not. There were also conflicting views and beliefs in some cases; some had it correct, with idea magic/Actualization having to do with identity and personal development (with the term "Idea" to refer to the origin of magic coming into use over time), while others held onto various other beliefs. 

The Age of Secrecy

~1500 - 2016. 

The age in which the world of magic and the world of the mundane attempted to completely isolate themselves from each other.

An Edeia known as Order along with some others called a convergence with as many Edeia as possible—they had seen possible futures with Possibility, and decided that the best path forward for the sake of order and advancement of society, the magic and the mundane should separate.

The separation had varying degrees of success. Edeia and other magical entities simply stopped appearing, and while the early generations knew Edeia were real, later generations had only the stories. Magic became myth, and those that fell into the world of magic were often told to keep things secret. Those who showed signs of becoming an Edeia would often be contacted and spirited away—or the family was told and brought into the fold of secrecy. In this stage, the mundane world is as close as it gets to ours, with a few differences: there are unexplored regions of the world due to magical effects (both deliberate and natural—such as places that would mysteriously turn you around or just never let you leave), and there are any number of fictional locations. 

It was during this time that some Edeia began to work together to truly understand their kind, and to standardize various terms and establish social norms among themselves. 

The Age of Reunion

2016 - present.

The age in which magic society and mundane society reunited. 

Order decided the time had come to reunite the magic and mundane, and did so with the help of many other Edeia, including Data. This led to collaborative governing bodies, magical entities hiding in mundane society revealing themselves, intersections of magic and science, etc. With the reveal came all the knowledge of Edeia, organized and presented for all to understand if they desired. 

Currently, there is advanced technology and magitechnology in use, though there are only a few "futuristic" cities.

In ~2030, a supergovernment with some degree of control over all countries was established, along with the Registry.

The current time can be considered to be exactly 100 years from now, i.e. 2100s. 

Society, Culture, and Behavior

Edeia-Specific Society/Culture

Edeia do not have a centralized governing body or culture, but many may choose to integrate themselves into mundane society. 


Edeia do not have organized law enforcement, but if an Edeia is causing trouble, a meeting of Edeia can be called. This is referred to as a "convergence." An Edeia can send out an energy signal for others to gather, and each signal might attract about three to ten more Edeia. They then decide on a course of action; it is generally agreed that if a decision is made at a convergence, it should only be contested by another convergence decision. 

As for what those decisions are: they might decide to try to talk down the Edeia, or seal them within their Abstraction - which is possible through the combined effort of multiple Edeia. It could be indefinitely (which essentially means until dissociation) or for a set amount of time. 

It is possible to visit those within Abstractions, including those sealed away. In general, if an Edeia knows the energy signature of another Edeia, they can metaphorically knock on the door of that Edeia's Abstraction. Whether they let them in is up to them, though it is possible to force your way in. 

Energy Signature Exchanges

Edeia are capable of recognizing specific energy signatures—it may even be their most precise sense, since it is their only "default" one. Generally, an Edeia can recognize another to some extent if they spend some time in proximity, make contact, or both enter either's Abstraction, but it is much more socially acceptable to seek out Edeia you know less well after "exchanging" energy signatures by making physical contact and letting out a small flare/burst of energy.

For Edeia with hands, this is often done by holding each other's hands for a moment. Any kind of contact with any part is fine, and for those who prefer not to be touched, they can acknowledge an exchange by flaring their energy without making any contact. 

Interactions with Human Society

Relatively few Edeia remain in human society—they don't need to eat, sleep, and work to live, after all. They outlive all the humans, as well.  Many wander the parts of the world untouched by society, such as magical environments that may be dangerous or protected, possibly by an Edeia. 

That isn't to say they don't interact with human society. Some might want to contribute to science or magiscience, or create things for mundane society to partake of. They aren't allowed to take mundane political positions, but there are Edeia-specific roles that they may take. They might also act as advisors or Edeia representatives, running businesses (usually pretty small ones, since they have no significant need for money), or simply living among mundane society.

Mundane Society and United Society

Much of mundane society/history can be considered similar to ours, though from the Age of Reunion onwards, when it could be considered "united society" rather than "mundane society," many societal, environmental, and other issues were addressed fairly well, whether due to Edeia/magical intervention or not. 

Society is united by a supergovernment with some degree of control over all countries, established in approximately 2030. Following this, there came to be:

The Registry

After 2030, when the Registry was established, all citizens must have a record in the registry with some biographical information, as well as what kind of magic or supernatural abilities they have if any. For those born under normal circumstances in this world, the entry is made at birth and voluntarily updated (with periodic reminders to do so). Age updates automatically, though they can update information such as their picture, gender, pronouns, and magic information. 

Edeia may choose whether or not to maintain an entry in the registry if they already have one. Those who do not already have one can choose to make one. If they want to interact with society to a significant degree, such as being a resident, running or being part of a business, having a role as a leader, etc. they need to have an up-to-date entry. 

An individual may choose which parts of their Registry is visible to the public, if any. Edeia who register do not need to reveal their status as an Edeia to those who know them, in which case only Order and Data are privy to the information. 

Fusions may choose to register, and are strongly encouraged to do so as permafusions. The entry will be attached to both components' entries. 

Twin Edeia and Fissions have singular entries with different sub-entries. Twin Edeia have a sub-entry for each individual and their fusion, and Fission Edeia have a sub-entry for their normal form and each fragment. 

Below is an example of a Registry entry. The images on the left can generally be arranged into any collage desired and the distribution of space can be altered. Birthdays and other metadata can be added as well. A filled out template can be found here, and a blank template can be found here.

Potential Edeia in Society

It is fairly obvious when someone has the potential to become an Edeia, because they have powers as well as minor changes in their appearance, usually their eyes. The color of any part of their eyes could change, the pupil shape could change, there could be some other pattern, etc. At the same time, this can be hidden by covering the eyes or explaining it off as a different phenomenon.

In united society, in the Age of Reunion, once it is clear someone has the potential to become an Edeia, they are provided information on Edeiology and Edeia norms - of course, many do not consciously remember all of this information after Actualization. If the potential Edeia hides their abilities then they might not acquire this knowledge. 

During the age of secrecy, minor changes in appearance were often written off as mutations. Animals with idea magic were often seen as mythological creatures and spirits. 

Extradimensional Individuals

In the Age of Reunion, people are fairly open to individuals who come from other dimensions. They may choose whether or not to engage with human society—if they do, they need to be entered into the registry of all individuals in society. If that individual possesses a foreign type of magic or is anything other than a mundane human, they will be requested to provide a brief explanation of their capabilities and characteristics

There are, however, research groups dedicated to understanding extradimensional magic and science, and these groups may reach out to the individual to do some testing and research. This is completely voluntary

If the individual does not enter the registry but still interacts with society, authorities may attempt to get into contact with them. If they are deemed as dangerous to society and/or the world, they may be sent to their home dimension or a different one. 

Supergovernment and the United Council

Order has a major role in the supergovernment that governs the world by 2030, though they are not the sole dictator. Many others, including humans, other mortals, supernatural beings, and Edeia have positions, which are mostly volunteers that pass a qualifying exam (literacy, understanding of current policies, etc.) and then are picked randomly for election. There are about 50-100 members in the United Council at a time, with a term lasting five years; these terms do not all start and end at the same time and may stagger. There are no campaigns for those in the supergovernment, and you can consider it impossible to be rigged. The United Council makes decisions that affect all of society; there are smaller layers of government for countries, states, cities, etc. though they operate under similar systems and are under the authority of the supergovernment. You may have any of your characters serving a term in the United Council if you wish.

There may also be non-elected participants, such as consultants, volunteers in less important roles, etc. These may not have time-limited terms. You may have your characters in these roles without consulting me, but if you are unsure whether or not there is a particular role, please ask me. Many of the Orderly can be considered permanent consultants. 


If an Edeia is causing chaos in united society, Data will generally be the first to know, and the information will be reported to a member of a group of Edeia who have volunteered to keep a fragment of Data with them to notify. The Edeia may be asked to give a warning to the offending Edeia. 

On the second offense, Order may personally appear to judge the situation and give one more warning. You may mention this in your backstory without asking me so long as there are no unexpected interactions, but you may consult me for accuracy if you wish. 

If there is a third offense, Order may call a convergence to make a judgement; any Edeia may attend, though Order, Data, Saturne, and Pacific show up to most. The attending will decide on a suitable punishment—this typically involves deciding on the length of time for Abstraction containment (also called Abstraction jail), and then seeing if there are any Edeia who will volunteer to attempt to rehabilitate the individual. Rehabilitation will usually start within the contained Edeia's Abstraction, but if they finish serving their time or by the preference/decision of the rehabilitator or the convergence, sessions may occur in the rehabilitator's Abstraction. Order is able to "lock" an individual in the rehabilitator's Abstraction for set amounts of time, after which the offending Edeia is sent back to their own Abstraction

Sometimes, the punishment may be societal exile, in which they are forcefully teleported outside of the borders of civilization every time they appear. This is done with somewhat automated magitechnology, though Data monitors it. They may appeal their exile through an upstanding participant in society vouching for them in a convergence involving Order or at least one closely associated with them, and volunteering to escort them in society for a time. If the exiled individual demonstrates improved behavior, the exile may be lifted. Though Data will still be watching. 

You may mention this sort of judgement convergence in your backstory/history without consulting me, whether as the subject or an attendee, but if you want to have more details with my personal characters, you must ask me. 

The types of offenses they address are only in those in context with the united civilization, which includes all mundane humans living as part of society and magical individuals who choose to join it. 

They will address anything that causes distress, disorder, loss of agency/free will/ability to make your own decisions, destruction, etc. on a decently large scale as to affect a group of people, a city/town, all of society, etc. typically related to magic/Edeia, as the mundane side of society has other methods of enforcement as well. Breaking mundane laws in mundane ways as a mundane individual will get you mundane punishment. 

Interpersonal issues are not something they address; they will not interfere with unhealthy relationships, and they will not stop relationships and fusions that may pose a risk to society. Other individuals and Edeia may attempt to address interpersonal issues separately from Order, however. If there is an Edeia, fusion, or other individual that poses a risk to society, Data will monitor them so long as they are interacting with united society, but as long as they behave no other action will be taken. If they have repeat offenses (successful or not, since Data may act quickly) and show no signs of stopping, then the process will be as mentioned above. Societal exile is more common for non-Edeia and fusions.  

Space Travel

Edeia have always been capable of traveling in space, but to keep things simple and straightforward, there is no other life in space. There are no aliens from other planets in the world of Ideation, but extradimensional aliens may be present. 

By 2060, there is a United Space Exploration Association, or USEA, that is the center of efforts to explore space, allowing humans and other beings to wander the stars. National space programs were absorbed into USEA, though some still consider themselves part of a subgroup. This is a relatively small part of the lore as most important things occur on Earth, but this information is here if you want it. 

USEA and those part of it build advanced spacecraft to explore the vast reaches of space. These spacecrafts can be fairly small or very large, and are capable of faster-than-light speed and instantaneous communication using magitechnology. 

Most of space exploration involves researching the characteristics of other objects in space, such as planets, moons, stars, asteroids, etc. It is largely an academic/scientific venture, one to discover the curiosities of space. There are restrictions on building structures, as well; generally, the spacecraft is sufficient to act as a mobile base. Temporary and mobile pods are often used, and orbital bases are sometimes built. 

Edeia may sometimes build metaphysical structures in space, which is generally acceptable so long as it is not a physical structure that disturbs the integrity of nature. While it is possible that anyone could build whatever they want, I personally have complicated feelings about colonizing space, terraforming, etc. and it could complicate the world of Ideation. Space was not intended to be a major part of the lore, but again, this information is here if you want it. 


The magical physics and characteristics of the world of Ideation.


Idea magic is the magic of Edeia, magic that comes from the power of ideas, and it is the only form of magic originating from the world of Ideation.  Any other kinds of magic and supernatural abilities come from entities from different dimensions. 

There is a special case of Idea magic that anyone is capable of: ritual magic. An Edeia with the Idea of Ritual has the power to essentially grant power to rituals; however, there are many rules woven into the magic, one of which is that the efficacy of a ritual grows weaker the more people know how to do it. There are thus numerous secret rituals that are only passed down to a select few. 


The soul is the essence of self, which is tied to some form of "body" by some sort of energy. For mortal beings, life force is what ties their soul to their physical body. For Edeia, their soul is intertwined with their energy - the equivalents of their life force and body are one. Souls are made of a metaphysical form of energy, which Edeia may be able to influence and interact with to some extent.

A soul has little awareness and sense of self without a connection to a "body." A soul can be safely removed from a physical body by an Edeia; in this case, the soul still has a connection to the body and maintains the self-awareness. A mortal body will enter a sort of stasis without a soul: metabolic needs such as eating/drinking/aging/etc. will slow over the course of a few hours before halting entirely. However, being separated too long can cause difficulties, such as taking longer to awaken and lasting lethargy after returning, as well as a sense of dissociation and loss of self-awareness as the soul drifts from the body. So long as the body is intact, however, it is possible to return.

The appearance of a soul can depend on the nature of the soul, the context they are in, the way the soul perceives itself, and the way the one looking at them perceives them. Mundane individuals generally cannot see pure souls clearly, unless there are external influences. Different individuals may see different things when looking at the same soul at the same time. Some may see them as balls of flame with different colors depending on the individual's personality; some may see them as butterflies with different shapes, colors, and behaviors. Sometimes, the context has imposing influence; an Edeia who keeps a collection of souls in their Abstraction may consciously or subconsciously cause them to appear a certain way. For instance, souls in Repose's Abstraction have the appearance of stars in the sky. 

Fusions are metaphysically multiple souls merged into one; for a stable fusion, the fused soul functions as a singular soul. For less stable fusions, the souls have a partially-blended state. Twin Edeia have souls that are one and two at once - a state that should be unstable, but is not. Fissions are fragments of a singular soul. 

Generally speaking, souls naturally gravitate to a state of singularity, especially when under extreme stress. As such, when fusions or fissions are harmed, it is possible for them to return to their singular, individual states by "default." Permafusions have more resistance to separation, and Twin Edeia are unaffected by external forces in regards to their fused or unfused state. 

Unbound Souls

Under certain circumstances, a soul may become unbound after death but still exist outside the ethereal plane. This includes lost souls, which are unable to move to the ethereal plane on their own, and trapped souls (which can also be called bound souls, enchained souls, etc.), which may be bound to the mundane plane, an Edeia's Abstraction, or some other place outside the ethereal plane. 

These souls are generally at the periphery of perception; mundane individuals generally cannot perceive them, and even Edeia may not notice them unless they are looking for them or paying particular attention to the presence of souls. 

Lost souls include the souls of extradimensional individuals who have not fully naturalized to the world of Ideation but are unable to access their original metaphysical system for souls for destruction or reincarnation. Other lost souls may be bound to the mundane plane by regrets and unfinished business. They are generally not aware and lack a sense of self, but Edeia may be able to get impressions from them or, as in Life and Death's case, "read" the soul more clearly. If the business is resolved, the soul will return to the ethereal plane on their own. Life and Death may also sometimes choose to sever the soul's connection to the mundane plane and bring them to the ethereal plane to be reincarnated, though this process may just cause the soul to dissolve; what they may do instead is "force" a reincarnation. They will not remember their past, but will be drawn to their unfinished business and instinctively understand what remains and what they need to do to resolve it. 

Extradimensional Souls and Extradimensional Species

Extradimensional souls follow the original metaphysical rules of their dimension unless their souls are naturalized to the world of Ideation. 

There may be species external to the world of Ideation that have made their home there. If they reproduce, the souls generally originate from their original metaphysical source; they are functionally extradimensional individuals at birth. If there is something preventing new souls from being made or finding their way to the newborn individuals, then it is possible that the species is unable to have offspring without external interference; this may manifest as complete infertility or that offspring are stillborn. 

The abilities of certain Edeia such as Life and Death may be able to place a soul in a stillborn body, or a developing body. If the soul is a native Ideation soul, they may not be able to access any magic that is drawn from the original metaphysics of the species, though they can use any abilities that stem from pure biology. Life and Death are also theoretically capable of taking pieces of the souls of others; it would be possible for them to fuse the essence of extradimensional souls with that of a native soul to create a hybrid soul, though it is very unlikely for them to do this. 

It is slightly more likely for them to use a lost soul of the same species/origin if the circumstances align with having the lost soul and an available body present. If the same soul is present in the world of Ideation for a few lifetimes, it is likely for it to naturalize. 

Extradimensional humans and animals, if they are biologically the same as humans and animals from Ideation, can have children with native Ideation souls. If an extradimensional species has a hybrid child with a native entity, then the soul may have hybrid characteristics, be entirely extradimensional, or be a native soul depending on the extradimensional being's metaphysical "rules." 

Soul Naturalization

Extradimensional souls follow the original metaphysical rules of their dimension unless their souls are naturalized to the world of Ideation. This could potentially take multiple lifetimes. A naturalized soul functions as a native Ideation soul, and can develop an Idea on their own. Note that Actualization usually but does not necessarily fully naturalize a soul; if the individual retains a strong sense of connection to their origin in some way, they may retain elements of that in their soul. 

Depending on their original dimension and/or species, it may be impossible for them to naturalize in a single lifetime or even multiple. It can be accelerated by forming strong soulbonds with those that have native Ideation souls; a native Ideation soul leaves some of their essence with the other soul when forming soulbonds, and takes some of the essence of the other soul into themself. 

Generally, a single-lifetime soul naturalization will only occur with the extremely powerful soulbonds that often, but not necessarily, lead to Tuplet and Soultwined Edeia. Entities that have exceptionally long lifespans who also form fairly strong soulbonds may be able to naturalize in one lifetime, but this can take centuries or even millennia, depending on factors such as how strong their soulbonds are and how strong their connection is to their original world. 

In most other cases, the naturalization is only complete when the extradimensional individual perishes; the soul becomes very vulnerable and malleable at this time. If their soul has taken in enough of the essence of the world of Ideation, Life and Death may be able to take them into the ethereal plane, where the soul will completely naturalize and either dissolve into essence or be reincarnated as a human or animal in the world of Ideation. The soul will be freed from any metaphysical "rules" of their dimension or species of origin as well. 

If the soul has not taken in enough essence of the world of Ideation, then it remains beholden to the metaphysics of their original species and/or dimension. Depending on the circumstances, they may reincarnate in their original dimension or as a member of their original species, or they may be stuck as a lost soul—which Death will usually pick up and redirect to a suitable place. Life and Death may choose to return these souls to their original dimension or, not often, guide them to a new body; generally, they only guide extradimensional souls to a body that is or would have been stillborn, and are much more willing to do it if the body is the same species or otherwise from the same dimension as they were originally.  

The Ethereal Plane

The "ethereal plane" is not a formal term, but it comes more into use by the 2090s, when the nature of souls, soulbonds, and the ethereal plane became fairly well-understood - though there are a few throughout the ages that may have been able to divine a significant amount of understanding, if perhaps not shared. 

Note that the "physical plane" or "mundane plane" refers to the physical world of Ideation. 

Upon death of a mortal being, dissociation of an Edeia, or any other form of "death," a soul becomes released to a sort of ethereal plane of souls, largely disconnected from the physical plane but in many ways parallel to it. It has adjacencies to an interdimensional void, and souls may traverse into other dimensions from the ethereal plane. Some beings have the ability to interact with these souls, and sometimes there are places or times where the boundary between the physical plane and this ethereal plane where the souls can have influence on reality.

Souls here might scatter into nothingness, becoming a sort of dust dispersed across the infinity of existence. Or they might be reincarnated into another being, most likely in the Ideation dimension but not necessarily.

There is also a lack of individuality in the ethereal plane. Souls can fragment and come together as a new soul, many souls may disperse infinitely into an ocean of essence, new souls and fragments may from from the essence, much like stars being born of stardust. Some souls may have lingering wills, which manifest in a pull to reincarnate or a return to the physical plane as a ghostly entity/specter, though most of the plane is simply like an ocean of souls and soul essence. It just exists and expands infinitely.  

New souls can be made there spontaneously, but usually souls are made through conception of life in the physical plane. 

Contact with the Ethereal Plane

There are certain magics that can make contact with the ethereal plane of souls, including some forms of Idea magic, extradimensional magic, and ritual magic. However, whether anything responds can depend on any number of factors - whether the one trying to make contact is trying to reach out to a particular soul/entity, what sort of connection they and that soul have, whether that soul's sense of self can be retrieved, etc. If it goes well, it is possible to make communicate with a soul or summon it to the physical plane. 

If an individual is trying to reach the ethereal plane without any sort of direction or purpose, depending on the level of preparation they might:

Generally, Edeia in would likely be able to access the ethereal plane some extent, with varying levels of difficulty. Some might be able to travel to and from the plane freely, while some might find the experience too profound or overwhelming - enough to feel like if they stayed too long, they would dissociate and join that infinite sea. 

However... it is said that there is a guardian of souls and the ethereal plane. Any destruction or poaching of souls, or any other malicious acts would likely be met with severe consequence. 


This can be written as one word (soulbonds) or two words (soul bonds). 

There are different ways for souls to be bonded. 

The effects of soulbonds can vary, as each is as unique as every relationship. Common effects include being able to sense the other's emotions and thoughts, whether instinctively/subconsciously, a vague sense, or as a clear and/or external thing. A very common effect of strong soulbonds is having an  instinctive sense of the other's emotions, comfort, and needs. Many feel an unexplainable sense of comfort in each other's presence. 

Some individuals may not ever know they have a soulbond, even if it is an exceptionally strong one - especially before the Age of Reunion, when metaphysical studies became a public endeavor. 

Individuals who are aware of their soulbond can specifically "train" the bond to develop various rarer manifestations, such as rangeless (same regardless of distance) telepathy and empathy, sensation sharing (any or all of five senses, easier when in contact but doing it when apart is possible as well), melding thoughts together (typically only when in physical contact), switching bodies, etc. They do not need to know the exact nature of it, but they must be conscious of some metaphysical bond with another individual. 

Soulbonds grow on mutual trust, empathy, and comfort with each other. They can fade, be damaged, and even be severed by animosity, distrust, betrayal, violation of comfort/trust, and so on. That said, if an individual causes any kind of harm to their soulbonded, they may feel an echo of that harm on themself until the bond fades away.

Soulbonds are always equal on both sides. One side cannot have a stronger connection than the other, but they may manifest different soulbond effects and they may become aware of the bond or "something supernatural" at different times, as that is more of a mind thing than a soul thing. 

Depending on the strength of the soulbond, if one of the pair dies, then it is possible for the other to continue living afterwards, but for strong bonds it is typical that the other will lose the will to live. Those who had bonds that blended their sense of identity into one and two at once often die not too long after. 


Reincarnation is the process by which a soul that has already lived a life experiences rebirth as a new life. For the most part, the soul does not retain any memories of its past life, though the abilities of certain Edeia like Life and Death can allow an individual to remember part or all of a past life or multiple. Without any magical influence or interference in the process of reincarnation, it is impossible for the individual to remember anything from a past life. 

There are, however, certain things that may be retained across lifetimes without any interference. 

Additionally, certain circumstances can allow for a soul to be "reincarnated" while retaining some or all of their memories, or have a strong lingering influence from their past life: 

This is not exhaustive; other circumstances may be possible. In general, if the soul does not pass through the ethereal plane, then more remnants of their past life may cling to them. 

Reincarnation of the Soulbound

While deeply soulbound Edeia (Soultwined and Tuplet Edeia) cannot separately dissociate, other soulbound individuals can die separately. The stronger the soulbond, the more closely in time they reincarnate. 

Split-soul tuplets were at some point a single soul, whether in past lives or just for its initial formation. If split-soul tuplets die and the souls reincarnate, they will reincarnate at almost exactly the same time; this often involves biological twins but does not need to be the case, such as if their soulbond is not familial. Split-souls were once a single soul and could potentially merge in the ethereal plane and reincarnate as one being; they may alternate between singular and multiple across different lives, though it is more likely for them to remain split. 

Those with other kinds of soulbonds have some likelihood of reincarnating around the same time, and have a slightly higher than average chance to merge in the ethereal plane, though it is still profoundly less likely to merge than it is to reincarnate singularly or dissolve into ethereal essence. 

It is also possible for soulbonds to dissolve into the essence of the ethereal plane; this usually occurs for any that were not exceptionally powerful. The passage from life to death and back takes much of the entelechy of a lived life from a soul, and returns to the soul infinite potential. 

Parallel Dimensions/Universes

Parallel dimensions/universes can exist, with parallel individuals. These individuals are believed to be born with the same soul and similar if not identical physical forms, as much as their biology/species allows, but their subsequent experiences make each of these parallel selves different entities. Experiences shape the soul, after all, and these may lead to many differences, if perhaps subtle. 

Parallel individuals may end up in the Ideation dimension - perhaps one is native to the dimension, perhaps all are extradimensional. Regardless, it is possible (though rare as it always is) for multiple to develop different Ideas and Actualize into different Edeia.

Important and Historical Individuals

These are characters who play a significant role in shaping the world of Ideation. You may see them on their own page here