Boin(2005)

Boin is an adult anime series following Daisuke, a charismatic new teacher who quickly wins over his entire school. He introduces an unconventional classroom activity where students roleplay their future careers, but his true motives come under suspicion when he shows particular interest in spending one-on-one time with his female students. As rumors spread about his intentions, the girls in his class begin to develop their own expectations that extend far beyond standard instruction. The series blends comedy with suggestive scenarios as boundaries blur between teacher and student in this provocative comedy.