Kimi wa Boku no Muse

"Then let me tie you up for a minute." Haruki Aoba is a deliveryman for a shipping company. One day, he finds out that his delivery is to the home of Mr. Kumanomizuki, a BL novelist and a big fan of Aoba's. Aoba is very excited to meet the teacher of his dreams. However, Mr. Ogura, a.k.a. Kumano-sensei, seems to be in a slump and is not happy. Aoba offers his help to Kumano-sensei, whom he loves very much. However, his next work is an SM one! Aoba, bound by ropes, gradually begins to feel strange... (-DeepL)