I remember reading this one shot I think it might have been a Takeshi Matsu piece. Its about this guy in high school and he draws really dirty thing on his sketch pad and them holds it up to hot boys around his school then he finds a guy who wanted to model for him.

It is driving me crazy and I really wanna find it.

Any help would be appreciated and eternal love to whom ever may know the title.

I think it's The Case of Kannai-Kun, by (yup!) Takeshi Matsu.