hello there, i'm looking for a manga title, it's a oneshot with a story as follow:

in a school, a guy surprise a classmate girl exploring her body in a club room. He propose her his services to help her (or he half force her, i don't remember). After a rather soft first session, she send him a small paper during class (she sits next to him) asking for more sessions, he agreed to and they continue exploring her body in the same clubroom. At the end, she sends him a paper saying "i love you".

The only pictures i can remember clearly is that of the clubroom that looked like a storage room for school furnitures (desks, chairs), and that they both seated at the back of the classroom, both of them. the guy on the window side, and the girl on his right.

please, halp!

What i like about sarcasms is when people don't get it they think you are nice.