Utsumi-kun's Love Song by Ruru Hanamiya, Volumes 1-5 KC Comics High school student Shiori, who has failed to make friends, discovers that her favorite music streamer "Kanade" is actually the unsociable Utsumi-kun, her classmate. He proposes to her, "Become my girlfriend for a new song," and so begins a heart-fluttering romantic comedy. I've only read it once, so it's in good condition.