Yuusha Party ni Kawaii Ko ga Ita node, Kokuhaku shitemita.

Youki dies in a traffic accident and is later reborn in the magical world. Instead of becoming a hero, he was reborn as a powerful demon. He has no will to be a demon lord, and because of that, he started to live a simple life in the castle. One day, when a group of heroes wanted to kill demons, Youki alone defeated all of them. While fighting them, he saw a priest girls and he fell completely for her.