Junichirou is the protagonist of Denpa Kyoushi—a 24-year-old otaku with a condition called "ADW" (literally meaning he can only do what he wants). He never asked to be a high school teacher; his sister Suzune basically forced him into the job by applying on his behalf without permission.
He's unabashedly into anime and manga, and his behavior tends to mortify people around him—especially Suzune. But beneath all the weirdness, he's genuinely brilliant and cares deeply about his students, willing to go out of his way to help them. That brilliance isn't just for show either: he's published research in Nature, one of the world's most prestigious science journals.
Content compiled by AnimeList.moe from publicly available sources.