Editing Monster Girls/Extra (section)

===Regarding the soul and reincarnation===

* While a soul may be trapped or placed in a dormant state, it is likely impossible for any being to destroy it. For an example, there are means to damage a ghost's body, but what would be damaged is the body she constructed to interact with the physical world. Her actual soul would be unharmed, even if the constructed body was completely destroyed. She would simply become invisible to normal people and unable to interact with the physical world until she was able to recreate her "body." (source: Personal communication with Kenkou Cross).

* In short, when a man and monster marry, their souls are always "stained/altered" so that their attraction to each other becomes eternal and they will eventually reunite when reincarnated and also regain at least some memories of their past lives with each other. "Soul stained" is a state of being. Their souls will also try to reincarnate at a time and location close to the other soul. (source: Personal communication with Kenkou Cross).

* The Ritual of Soul Marriage goes beyond even this, though. Their souls are bound together in such a way that they are in a sense one soul, and one person can't be killed while the other still lives (this is what is meant by "won't be vulnerable to death" in World Guide 3's description, not that they can't die at all), and if one is an undead then their immortal undead nature will be shared with the spouse. If they are not undead then they will die at the end of their lifespan at precisely the same time as their spouse. Reincarnation is then effected so that they are certain to reincarnate at the same time and near to each other to make it easier to be reunited faster, such as in neighboring families or even as brother and sister (with the resulting forbidden romance, and this presumably refers to the future when monsters birth incubi, or rare situations where a monster's soul gets reincarnated in a human body, or other situations where a boy may end up with a monster girl sister). (source: Personal communication with Kenkou Cross).

* The "souls" of plants and animals are quite different from those of monsters or humans. So humans and monsters do not reincarnate as animals or plants. (source: Personal communication with Kenkou Cross).

* Normally a soul is reborn as the same gender they were in the previous life. Alps are an exception, as they reincarnate as women. (source: Personal communication with Kenkou Cross).

* Human souls can reincarnate as monsters, but as a rule the reverse does not happen. Monsters typically reincarnate as monsters. In the rare cases where their soul does reincarnate in a human body, they may find themselves filled with a particular lust for a certain man, and when the person monsterizes she may experience a strange sensation of "back to the real me." (source: Personal communication with Kenkou Cross).

* Monsters easily reincarnate as the same race of monster they were in the previous life, but exceptions are also relatively common. (source: Personal communication with Kenkou Cross).