In a lolita girl's room, an armpit-haired older sister suddenly appears. She tightly binds the lolita girl's wrists with tape, then forces her to lick her armpit hair. The lolita girl becomes aroused by this act, licking the older sister's entire body thoroughly, savoring the pleasure. In response, the lolita girl continues to lick the armpit hair in return, deepening their intensely intimate and erotic relationship.