Kono sora ni hibike manga

Kono Sora ni Hibike summary:

Nene, Hajime and Ryou have been friends since their childhood. Now in high school, they spend their days practicing for the school's marching band. But the club, lacking members, is about to close down. And Nene, who wavers between sarcastic Hajime and brother-like Ryou, must decide between the two...