Chikako is a female third-year GA student. She is head of the fine arts club and Mizubuchi and Mitsui call her "Aa-san".

Chikako speaks in Chuubu dialect. She has a boisterous personality and often does things before she talks about them. She respects the previous club head Nozaki and has a very strong attachment to the fine arts club.

(Adapted from ja.wikipedia.org)