Reiya, Taiyou, Momo are good friends at the same university. Although Taiyou and Momo are dating, they often argue over trivial matters. Seeing this opportunity, Reiya takes advantage of their fight by seducing Momo. Unlike her relationship with Taiyou, she enjoys intense sexual encounters with Reiya... even begging him to "put it inside... please." When Taiyou returns unexpectedly, he witnesses a shocking scene involving his girlfriend and another man.