Minna, Kataomoi Bakari Shiteiru.

It is spring, when the cherry blossoms are falling. Chika enters junior high, and she is captivated by the dashing boys Oh and Kanata from the track team. She and Oh become close, and it seems as if their feelings for each other might be mutual, but Oh already has a girlfriend named Miyuki...! A story of tender first-love between four friends....

(Source: Shogakukan, translated)