Koakuma wa Ore no Iinari | 小悪魔は俺のいいなり | Devil Day | The Small Devil is Under My Control
From Exiled Rebels Scans:
Kuroya Rui is a talented porn star who does not care how many partners he has on a daily basis or how many he has in bed at the same time. One night, after his filming, he meets Eak who claims to be a incubus wanting to seduce Rui. What will happen when Rui decides to play Eak’s game?
– chapter 1