Marie, an office lady, has feelings for her boss, a cool and popular man, Nakashima Kento. One day all their service organises an after work, where Marie and Kento end up alone together. There’s a real spark between the two of us…! That’s what Marie thought, but she’s started to find some strange things about Kento’s behavior. Tonight, he’s not kind as usual and he even tries to kiss her precipitately. When she was having a bad feeling about the situation, “Kento” admitted his true identity, Nakashima Yuuto, Kento’s twin brother. The real Kento is sick at home, and couldn’t come tonight. That’s why Yuuto invites Marie to their place asking her to take care of Kento. But what does he mean?