Due to family circumstances, Yuki has only one belief: money will make his little sister happy. And thus, he works part-time jobs late into the night. His plan is to start working full-time after graduation, but his little sister tells him that if he won't go to university, then she won't either.
Koga Nao never knew his life would take a wild turn when a night out at a college drinking party would result in a messy relationship with Toiro Kirame. Now forced to date her, his life only gets more complicated when his longtime crush, Nobuta Yua, decides to confess to him!