Sae Inagaki is the perfect honors student—cool, athletic, and academically gifted. Yet her shy personality leaves her isolated in class. Her kind homeroom teacher, Youichi Shiraishi, notices her loneliness and offers genuine support. Moved by his kindness, Sae falls deeply in love. Gathering her courage, she confesses her feelings and boldly kisses him. From that moment, she becomes willing to do anything for the man she adores, surrendering to his every desire and receiving intimate "education" in return.

The second episode shifts focus to Youichi's precocious younger sister, Nana Shiraishi. After watching a horror movie, Nana can't sleep alone and begs her brother to share the bed. She secretly hopes he'll tease her developing body, but he falls asleep instead. Frustrated, the cunning girl decides to take the initiative and play with his body all night long.

This 2-episode OVA explores taboo relationships, first love, sibling teasing, and explicit sexual awakening with high-quality animation from Mary Jane / NewGeneration. Expect vanilla passion, seduction, and plenty of creamy "lessons" in this remastered forbidden love story.

Based on the erotic game by Tanuki Soft.