All I Want Is to Sleep with Lucifer

While talking about his dreams in life, someone spoke with deep feeling and made a bold declaration: All I ask is to sleep with Lucifer! When he woke up, he found himself transformed into an ordinary, mass-produced angel. How was he supposed to get close to the godlike man in a high position? Help, I'm in a hurry~ Later, he discovered that he had become the godlike man's "love rival"? How could he clear up the misunderstanding before getting killed? Help, help, help!!! And then...