In a quiet mansion isolated from the neighborhood, a beautiful mother lives with her two daughters. One day, a female student named Satomi, who helped the mother in town, steps into the mansion. Inside, she discovers the sisters submitting to their mother's sweet torment, entwined in an obscene lesbian incest forbidden for anyone to see. Satomi watches, unable to look away, hypnotized by the mother and daughters' depraved lesbian acts. Overcome with arousal, she begins masturbating while hiding against the wall—only to be caught, restrained, and dragged into their taboo lesbian world. The cast: Satomi / Hana Hirayama, a serious female student; Mother / Kyoka Tachibana; sisters Reiko and Takako. Reiko is a submissive beautiful girl devoted to her mother; Takako is an adorable daughter who adores her. ■10:00 The world she glimpsed. Satomi is a girl struggling with her future and her place in life. After helping a beautiful woman in town, she enters the woman's mansion and witnesses the mother and her daughters' lesbian master-servant relationship. ■12:00 Voices from the sisters' grand room. Reiko and Takako in their uniforms press their lips together, groping each other's bodies. ■14:00 Mother and Reiko. Bound in a spread-eagle position, Reiko is made to cum by her mother while still in uniform. The two rub their cunts together, producing lewd sounds as they climax. ■16:00 Mother and Takako. "Today is your sister's birthday. The private tutor brought us a cake." The mother takes cream from the cake Takako brought, smears it on her own cunt, and says, "Takako, lick it off for me." ■19:00 Mother and the sisters. The mother commands the sisters to make love before her eyes, watching with satisfaction. Soon, all three entwine in passionate union. ■22:00 Bound Satomi. Having spied on everything, Satomi is discovered by the mother and daughters. "You've been watching the whole time, haven't you? Deep down, didn't you want this too?" the mother says. Bound, Satomi is caressed all over, brought to orgasm after orgasm until her reason shatters—and she falls into the lesbian world. ※This work marks the first lesbian release for all performers.