Sensei, Suki darake desu.

The quiet, melancholy art teacher at Ryohei's school is just the kind of guy he likes to tease. It all began one day during class, when the teacher, Mr. Kazami, got angry at a group of students laughing at some dirty jokes. Noticing this was out of character, Ryohei grows curious and goes. to the art room after school. He soon learns what makes Mr. Kazami tick and begins the relentless torture of his poor, sensitive art teacher... Also, enjoy reading "You're the one who lit my fire," a love story between an actor with a hidden lust for young men, and his youthful, alluring co-star.
(Source: Renta!)