Inui Miri

Miri’s the other close friend of the group that the club starts around. In general she’s the sporty angry tsundere type girl. She tends to have violent moments, but mostly directed (justly) at Shigeo. If it weren’t for her, Shigeo wouldn’t get nearly as much punishment as he deserves. Incidentally, she is quite amazing drunk. Miri and Shigeo are friends with Yukako and Atsushi since middle school days.

Spoiler

She is actually childhood friends with Atsushi