After being transferred to Tokyo, a middle-aged salaryman finds it difficult to enjoy his life. That is, until two busty young ladies, Nana and Ami, approach him with an opportunity: he can enter a sexual relationship with them as long as he compensates the two and abides by their conditions. Without any reason to refuse, the salaryman eagerly seizes the opportunity for intimacy with the girls. However, it remains uncertain whether their relationship will ever become more than a simple transaction. [Written by MAL Rewrite]