Yui Ichii
Yui's a member of the Data Processing Club, though honestly she'd probably prefer if people didn't make a big deal about it. She's pretty shy by nature, which makes her an easy target—especially for Yuzuko and Yukari, who seem to get a kick out of messing with her whenever they get the chance. It's the kind of dynamic where you know they're not being actually mean, but Yui definitely bears the brunt of their teasing.
Content compiled by AnimeList.moe from publicly available sources.
