Kimi to Kami Hiko–ki to.

A high school student named Kei and his childhood friend Rin, who enjoys making paper airplanes, form the core of this 4-panel comic. Kei appears to have feelings for Rin but is not fully aware of them. The dynamic shifts with the introduction of Rin's classmate Ryuusuke, who also shares an interest in paper airplanes, and another new character, Aoi. As these characters interact, Kei's emotions grow more complex, mirroring the unpredictable flight paths of paper airplanes.