One day, Airi is suddenly kidnapped and confined to a certain room. There is a boy named Shota who has lived in that room for 12 years. The two of them began their strange life. Airi is sexually trained by a kidnapper using aphrodisiacs every day. In the midst of all this, the love for Shota begins to develop. A slight hope was born in despair. And despite being confused by the sudden release, what is her choice...