I Was Confessed To And Got Dumped, So I Devoted Myself To My Hobbies, But Things Somehow Got Out Of Hand?

A boy with various interests, Sakurai Haruto, in the middle of summer vacation got confessed to by his classmate who was a beautiful girl on a chat application. But… Saying [Actually I don’t like you after all.], got dumped for some reason. Confused by the situation where he got dumped before he could even reply, hurt, Haruto decides to devote himself to his various hobbies to forget about it. He thought up novels, uploaded them on a novel upload site, made vocaloid songs and uploaded them on video websites, all just to forget about being dumped, he devoted himself to the things he liked. And the result of that was…