Nanato Igarashi was kind enough to deliver a dropped license card to its owner. However, instead of being rewarded for his good deed... he is drugged and ravaged by the despicable excuse for a man. Thus was the beginning of Nanato's misfortune.
A shut-in recluse Nagomu meets a suspicious boy on his way back from the convenience store late at night. Getting involved with the boy sees him transform into a boy himself. He seeks help from his friend Miya, but is instead sexually assailed.