DANDY-639 Can a pure-hearted schoolgirl who finds a restrained boy with handcuffs and a key attached to his body stay calm even if he becomes aroused? VOL. 1

A tip says that if you catch a schoolboy on his way home and restrain him outdoors with handcuffs, then tie the key to his body, a serious, innocent-looking schoolgirl will come to help. Based on that information, the observation begins. Before long, the serious schoolgirl does come to help, but she struggles to get the key, and the excitement causes his body to react strongly. She feels shy and cannot look directly, yet becomes flustered by the situation. They end up getting carried away until sunset.