Intriguing Secrets(2006)

Boku no Koi no Hanashi Himegoto

The midsummer sun's rays enter the courtyard. Umehara of the school's art club is commanded to do weeding as a punishment with Mizue, a classmate he doesn't get along with. It was supposed to be the worst scenario Umehara could find himself in, but he begins to have a crush on Mizue and cannot tell anyone about it. Suddenly, Mizue asks Umehara, who puts his feelings into his paintbrush, to draw a picture of him...?! The two of them end up spending time alone in the art room after school. What is he to do with the feelings for Mizue that he can't suppress?

(Source: Aarinfantasy)