RBD-302 — A Female Teacher, Until She Falls... Hitomi Rin

Izumi (Hitomi), a teacher who is about to marry her colleague Ishihara, is nearly raped by the principal's son, Kanzaki. Fearing that the incident would be discovered, Kanzaki and his son imprisoned Izumi in the basement with the help of her twin sister, Natsumi (Hitomi), who bears a grudge against Izumi.