Mirai Natsume is infatuated with her Japanese language teacher Yagami, but he is actually a skilled rigger working for Headmistress Sakuraba's secret BDSM circle. Exploiting her earnest and kind nature, the men capture Mirai and take advantage of her pure feelings, turning her into an object of domination in this uniform gangbang torture story from Attackers' Hebibaku label.