When he goes to the house of his first love from his school days, her daughter Mitsuki greets him at the front door. He thinks it's a dream... but a girl who looks just like his first love from back then is right in front of him! He is shocked, as if he has been taken back to his youth, and begins to wonder... One rainy day, Mitsuki comes home soaking wet and he becomes aroused by her see-through bra, and cums inside her multiple times, taking her virginity. Mitsuki is shocked, but when he finds out that his first love is his mother, she starts to seduce him instead.