Sukoshi Fushigi na Kakuu Trip

Peter Pan’s Neverland… is a land of fiction, but in this world, people will float into the sky when they feel happy or excited. But just one person, Fuji, is unable to fly into the sky freely. If he were to fly, his feelings for his friend, Nanao would be discovered. Fuji does his best to control his body so it doesn’t float, but Nanao, always his happy, floating self, comes to visit Fuji…

(Source: Ichijinsha, translated)