A male masochist who once deeply admired Yuzuki in college continued to watch her obsessively, like a stalker, until he finally captured her secrets on camera. His actions should have been nothing more than infatuation. But on Yuzuki's birthday, he stuffed himself into a bag, curled up his body, and offered himself to her. Even after being rejected, he resorted to blackmail by threatening to expose her secrets, forcing her to accept him as her slave. Behind his actions lay not love, but a twisted mix of domination and obsession.