The narrative plunges us into the collapse of a pact and the metamorphosis of two athletes into something entirely new. Originally, three conditions were established to protect Reira, a moral shield in a world of competition. However, this agreement crumbles spectacularly when they witness the relationship between Inose and Reira, an act that nullifies the contract and releases them from their obligations. Instead of reclaiming their freedom, they both make a decision that redefines their existence: they abandon the sport and, of their own volition, submit to training to transform themselves into "masochistic bitches," embracing a submission previously foreign to them.
The story centers on the new and brutal contract that Inose imposes on them, a power game with rules as clear as they are ruthless. The setting is a ryokan (Japanese inn), which becomes both their training camp and their gladiatorial arena. The rules are simple and terrifying: for one week, they must dress and behave according to the whims of anonymous VIP clients, obeying every order without question. The ultimate goal is a degrading competition: whoever extracts the most semen will be "welcomed as Inose's wife," while the loser will be given as a prize to the VIP clients.
The plot unfolds like a sadistic reality show, a "semen extraction boot camp" where each day is a new humiliation filmed for the viewers' enjoyment. Forced mixed-gender baths, grotesque party tricks, and behavior bordering on bestiality become their new routine. However, the climax of the narrative is the final betrayal of their past. The two, who were once loyal and fiercely competitive rivals in the sport, are forced to face each other in the most intimate and treacherous battle of all: a pussy-versus-cock fight. Their story is the chronicle of a controlled fall, where the sporting spirit is replaced by masochistic lust and fraternal rivalry is corrupted into a competition for sexual survival, where the only prize is a different form of slavery.