START-271 The dorm mother who acts like a man is used daily by the engineering students as a practice dummy for their practical exams, having her nipples tweaked until they hurt. Her nipples have been continuously developed and grown large. Hikari Aozora

Hikari, a dormitory mother at a certain technical university, has a tomboyish personality and is strict yet affectionate and supports students.Since industrial university students are required to be skilled with their hands, Hikari has used her nipples as a practice base for generations as a part of her practical preparation...A perverted dorm mother who can't satisfy her husband is venting her sexual desire while her big nipples have grown on her!