One day, Airi is suddenly kidnapped and held captive in a room. There, a boy named Shota lives in the room with her for the past 12 years. The two of them begin a strange life together. Airi is sexually trained almost every day by her kidnapper using aphrodisiacs. In the midst of all this, love for Shota begins to blossom. A glimmer of hope is born out of despair. And what path will she choose, despite her sudden release?