Forbidden Lessons in the Old School Building

Ishizuka Kengo, a newly appointed teacher at his alma mater, seizes the opportunity presented by his custodianship of the old school building to indulge his hidden passions. His first focus is the innocent student Morimiya Saki, soon entangling her friend Arisa, her mother Rie, and fellow teacher Mashima Mikako. As their paths intertwine, they find themselves caught in a web of Kengo’s dark intentions, facing unexpected challenges and desires that awaken within the shadows of the old building.