Izumi, who has an unfortunate physique, always encounters misfortune. During the high school entrance examination, with the help of the strong woman Shiki Mamoru, he was able to get back his admission ticket that was blown to a tree by the wind, and was admitted to high school.Izumi always wanted to thank her in person, but what he didn't expect was that the two went to the same high school by fate and became boyfriend and girlfriend.