Yuuki, who has a gentle personality and is clumsy, is scolded by his boss Misa. However, when he is called on for a business trip for a project he is working on as an assistant, he ends up spending the night at a hotel with Misa, who he doesn't get along with. Misato is usually strict, but when they are alone, her attitude changes drastically, and while Yuuki is taking a bath, she sneaks into the bathroom and plays with his body, and then ties up the sleeping Yuuki and makes him her own... Struggling between the "immoral act" and the "pleasure engraved on her body," she falls into the world of lesbian bondage...