Yoshino's Half-Cousin
Raised in Kyoto, she's Yoshino's half-cousin and genuinely fond of both Yoshino and Yoshino's grandfather—partly because Yoshino bears such a striking resemblance to him. She's basically Yoshino's trusted confidant.
Personality-wise, she shares a lot in common with Kirishima: fundamentally gentle and easygoing, though she's known for maintaining a pretty active roster of friends with benefits.
Content compiled by AnimeList.moe from publicly available sources.