Shota, who attends a cram school, is crazy about his teacher, Sayuki Sugano. After all, Ms. Kanno has huge J-cup breasts. Shota doesn't attend class seriously, and instead peeks up Ms. Kanno's skirt in the mirror and plays pranks on her as much as he wants. He even goes to her house and stays the night, and has sex with her, or has sex with her during class, hiding it from the other students. He does whatever he wants.