Do your Best, Inma-kun

Anri is a Incubus who has an abnormally low self-esteem and is not very good at interacting with humans. Almost collapsing due to lack of energy, he wanders into a night club and meets Keisuke, a Parisian young man, and ends up at his house. Asato reveals that he is a Incubus and impotent, but Keisuke's reaction goes way above his expectations!? With limited bonus!!