Aoi Kiseki

[summary by: love_blossom] wakatsuki ran is a swimming prodigy. every girl adores him but the only thing he loves is swimming. ageha bumps into ran, one day, and she tells him that he is just an obsessed swimmer. but when he shows her how good he is, she gapes at him and asks, “please teach me how to swim!” ran finally agrees and the swimming romance begins.