Kei Inoo is the main campus crush. He's handsome. He's a cutie. He's got a cool voice. He's a genius. But...he's a heartbreaker. 

 He receives a confession almost everyday and switches girlfriends twice or thrice a month. He found doing that FUN.

 But then there comes a transferee girl who doesn't lay her eyes on him. 

 Kei's friend challenged him to make the transferee girl to fall for him and Kei accepted.

 He became her suitor but the girl just won't give in to him.

 Soon enough... Kei just found himself falling in love with the girl.