Kiyoharu is a cross-dresser who presents as a girl at school, though his male classmates have spread rumors about his actual identity throughout campus.
On the surface he comes across as pretty timid and friendly—genuinely sociable, even. But there's a darker streak underneath. He's got a gloomy, calculating side that nurses grudges against anyone who's bullied him, and he's not above scheming revenge. It's a strange mix, but it works.
His magical artifact is a ring that lets him tap into other people's minds and communicate across any distance. He uses it mainly to stay connected with the other magical girls and to check in on whether people are still alive. Basically his lifeline to everyone else in the group.
Content compiled by AnimeList.moe from publicly available sources.