Soshite Boku wa Tohou ni Kureru

Newbie manga editor Hatori Sekima has always admired the well-known shoujo mangaka Honda Yuki sensei, hoping one day to work with Honda sensei. But when Sekima finally gets the chance with work with Honda sensei, he discovers that this Honda sensei is not the cute girl he imagined, but a handsome man who seems to be 'interested' in him immediately...

(from Peccatore Sanctuary)