Yoshimi is a member of the After School Sweets Club of Trinity Integrated Academy.
She has a complex about her height and physique, and always gives the impression of an angry small animal. Despite wanting to become more adult-like, she is always doted on for how her thoughts are reflected unchanged in her facial expression. Yoshimi's pastime is touring cafes to taste limited edition sweets - on such occasions alone, she has a brighter smile then anyone else.