He's the main character in the "Me!Me!Me!" episode, basically your textbook otaku whose obsession with otaku culture completely takes over his life. The relationship stuff is pretty much the tragic core of his arc—he ends up losing his girlfriend because he's so deep in that lifestyle that he can't balance anything else. Fans often note how the episode uses him to explore the darker side of being completely consumed by fandom, rather than just showing otaku stuff in a neutral way.
Content compiled by AnimeList.moe from publicly available sources.
