When feisty college student Yuri is attacked at a party, she's saved by Oya Toshiomi, the underboss of a yakuza syndicate. Despite her obvious attraction to him, she convinces herself that she's not in the market for a bad boy type. But when they meet again, she finds herself irresistibly drawn to him—kicking off a steamy and dangerous love affair that threatens to consume her, body and soul. Adapted from a manga by the same title.

Tenshu is imprisoned and sentenced to death for murdering the men who raped his girlfriend. However, he manages to survive his execution and is presented with an option: face another execution attempt or subject himself to their bizarre and dangerous experiments.