“I knew it... This kid's got a thing for armpits! There's something out there for everyone, huh?” Nozomi-kun is a middle school boy with an armpit fetish. One morning on the train, he spots Tsuyuno-chan, a high school girl who's a bit of an exhibitionist. Immediately entranced, he follows her to her basketball practice. But when she spots him, she decides it might not be so bad to just indulge him?!