College student Ayumi agrees to become a personal tutor for Yuki, the younger brother of Yoshiki, the guy she likes. Unbeknownst to Ayumi, Yuki turns out to be not only good-looking, but a total player?the exact type of guy Ayumi tends to avoid. However, Ayumi's days become filled with excitement when she's with Yuki. Sometimes he acts serious, and other times he holds her tight. One day, during a lesson, Yuki suddenly pushes Ayumi down and claims it's his turn to teach her. This naughty student is too intense!!