She's the third kid in the family and the second-oldest girl. Athletic and competitive, she's basically the star of the basketball club—genuinely talented at sports in general.
When it comes to personality, she's got a rough edge. She tends to be physically aggressive with Haruki and has a hard time being straightforward about how she actually feels. It's a pretty typical tsundere thing, honestly. Academically, she's the outlier in her family; while everyone else pulls solid grades, she struggles with tests and studying. It's kind of her thing at this point.
Content compiled by AnimeList.moe from publicly available sources.