Club: Flower Arranging Club
Song: Hanafubuki Reflect
Power: Selfish Flower
Sadamatsu runs the Flower Arranging Club alone, which means he doesn't get many chances to interact with people. Instead, he pours his energy into tending the academy garden and chatting with the plants. He comes across as withdrawn and melancholy most of the time, but he genuinely brightens up whenever someone actually talks to him—it's pretty endearing once you notice it.
He's the definition of a laid-back, unbothered guy with a perpetually flat expression. The rare times his face cracks into something like a smile are when someone shows interest in joining his club or when he's being interviewed. Sadamatsu's the type to fade into the background, rarely drawing attention to himself. When things don't go his way, he has this habit of biting his handkerchief. He was apparently into collecting plushies as a kid, though these days he's more attached to his tea—he carries a cup with him everywhere, much like how Kyoma is always nursing milk.
Content compiled by AnimeList.moe from publicly available sources.