After surviving a sadistic sex party where he was used as a toy and left for dead, Shouji embarks on a mission of vengeance against the women responsible. Utilizing his job as a delivery man to lure and trap his victims, he forces Yuka into submission to act as his informant. After breaking the fitness champion Miku through blackmail and sexual dominance, Shouji secures the name of his next target: Nanami Kirijima.
The antagonist continues their vengeful campaign against the women from a past sex party, targeting Nanami and Maria. Using explicit photographs for blackmail, the antagonist lures both women into traps where they are subjected to sexual humiliation and torture before being stuffed into boxes and discarded in public. With these two victims dealt with, the focus shifts to the next target, Satsuki Saijyo.
Shouji targets medical genius Satsuki Saijyo, discovering her secret masochism and her connection to Ayame, the president of Tokudaiji Pharmaceuticals. Upon uncovering a horrific experiment where Ayame used disposable test subjects—including Shouji himself—to maintain her youth, Shouji enacts a brutal revenge. However, the confrontation leaves Ayame obsessively craving Shouji's vitality to preserve her beauty forever.