Hikari, a dorm mother at a certain technical university, is a tomboyish person and supports students with a strict yet affection. Since industrial university students are required to be skilled with their hands, Hikari has been using her nipples as a practice tool for generations as part of her practical preparation... A perverted dorm mother who can't satisfy her husband is forced to release her sexual desire while being teased with her big nipples that have grown up!
