Sasano is a receptionist who's into rough sex, Takeshi is a masseur and a sadist
Although office love is strictly forbidden by their boss, they go out with each other anyway
Their initial deal is sex only, but romantic attachment gradually arises in the workplace and home
Sasano and Takeshi work at the same massage center. Office love is a taboo subject at work, but Takeshi asks Asano to go out with him anyway. Sasano agrees, but at the sex-only terms, while Takeshi seems to want more than just that. And so they start getting intimate in secret and balance work with love.