After school, Emi comes to the teacher's lounge. Their relationship has crossed a line. "Teacher, please punish me today too." In a corner of the gym storage room, she's restrained in her underwear and writhes in pleasure from head to toe. Emi tries to stifle her moans, afraid of being noticed. Suddenly, her nipples are teased, and she instantly reaches ecstasy. Later, they move to a hotel and resume the restraint play. In a helpless state, she's choked in the missionary position and receives the baptism of the anal play, climaxing repeatedly. Their unconventional relationship, which has become a daily routine, intensifies her excitement. Some days later, the teacher punishes Emi in a love hotel bath because her swimming performance was poor. Knowing how sensitive her groin is, the teacher relentlessly teases her with soapy hands. Emi's cries of pleasure and her writhing form drive the teacher's large cock to the brink of explosion. He forces a soap play and ejaculates a massive load! This after-school extra lesson, a secret between the student and teacher, remains unspoken.