Ishikawa is a teacher who hangs around the 5th grade staff room—most likely the gym teacher, though it's never officially confirmed. He's instantly recognizable in his perpetually wrinkled jumpsuit, complete with messy hair, beard, and glasses. He'll dispense genuine advice and spiritual wisdom when asked, drawing on real experience, but he's far from a role model. The guy keeps business cards for adult shops stashed in his jumpsuit pockets, which became embarrassingly obvious when they fell out of a borrowed suit while he was with Nube.
His hygiene habits are legendarily bad—he's known to dodge showers for over a month at a time. And he's got a taste for women's underwear that eventually backfired spectacularly when Minki, sister of the oni Baki, showed up from hell specifically to reclaim them. Despite the uncertainty about whether he's actually assigned to 5th grade, he's consistently spotted with those teachers, so the connection sticks.
Content compiled by AnimeList.moe from publicly available sources.
