Definition from Wiktionary, the free dictionary
otakukin (plural otakukin)
- (Internet) A person who claims or believes that their soul is a reincarnation or parallel incarnation of a fictional character (especially, from anime, manga, or video games)
2006, "Cypher", “Considering Snuhwolf”, alt.horror.werewolves, Usenet:
- The definition of entertainingly nutty would be otakukin.
2007, "Juan Valdez", “Ping Juan Valdez”, alt.recovery.aa, Usenet:
- I pointed out that you telling me that Otakukin are insane made as much sense as belief in God. Both are things taken on faith, you see?