Gesumi Hebitsuka

Gesumi Hebitsuka is the girlfriend of Setsuyuki Mimura where they work together at their university's goods store. Gesumi is a nice, energetic and hardworking girl, but she can be clumsy at times. She can also be very clingy on occasion. When she goes out to drink with Sachi and Miyuki in Volume 13 and Mimura is away/not with her at the time, she accuses him of "making promises he can't keep" because he is unable to mail (likely meaning text or message, generally just keeping in touch) Gesumi three times a week, as she had demanded.