The horrible, fiery collision of the otaku and otherkin subcultures. I.e., people who believe they are somehow involved with/reincarnated from the souls of anime/video game characters. Japanese pop culture is literally their religion. And no, it's not a joke. They are the ultimate illustration of how utterly batshit insane the Internet has become.

otakukin are those who have lost all concept of logic, reason, and reality. They believe they are the reincarnations of anime characters to make up for the fact that in real life they are utterly worthless and/or boring.

"Otakukin" are somewhat like otherkin. Otherkin believe that they are the spiritual reincarnation of an animal or mythical being, but the difference between otherkin and otakukin is that otakukin believe they are the spiritual reincarnation, or that they have the spirit, of an anime character. Hated on by many inconsiderate rude people for no reason at all, sadly.

A group that widely gets confused with otherkin.
While actual otherkin believe to be reincarted beings such as animals or an entity another plane of existence
The Otakukin believe they are reincarnted Anime or manga characters , regardless of when the the said anime was made they none the less think its real..even if it was made after they were born -.-....
In conclusion...
Otherkin -possible to some extent-
Otakukin -Psychos who delve to far into a show and believe they ARE from that show... -
DON'T confuse the 2 or mix them into one ugly definition... Roleplayers foul up the real otherkin community