Setsuna's younger brother, three years her junior. Despite their parents clearly favoring his sister at home, he doesn't seem bothered by it—he's genuinely good-natured about the whole thing. He's the kind of guy who's honest, straightforward, and deeply invested in his family's wellbeing.
That said, the academic favoritism stings more than he lets on. His sister gets the lion's share of study support, which leaves him at a real disadvantage. He'd love to get into Houjou University Attached High School, but he's realistic enough to know his chances aren't great given how the deck is stacked. Still, he keeps his head up about it.
Content compiled by AnimeList.moe from publicly available sources.