Shousetsu Blue Period

Yatora is the perfect high school student, with good grades and lots of friends. It's an effortless performance, and, ultimately...a dull one. But he wanders into the art room one day, and a lone painting captures his eye, awakening him to a kind of beauty he never knew. Compelled and consumed, he dives in headfirst—and he's about to learn how savage and unforgiving art can be!

(Source: Kodansha USA)