Hamaji Youhei, a freshman in high school, lives his life aimlessly, lazing around all day. He can't keep up with his studies, no good at sports and won't stick with anything for long. Besides that he's a pervert who's continuously rejected by girls. (Source: MU) But all that is about to change as join the water polo club not with very innocent motives but slowly gets to love the sport and especially the club captain who has managed to motivate him to break out of of his old habits (he still remains a perv).