Angel

Servants of god with beautiful white wings revered by the Order of the Chief God. They dwell in Heaven, and rarely visit human settlements as messengers of god. Aside from that, it is said that they sometimes accompany the church on monster-slaying expeditions. Since they faithfully uphold the teachings of god, they're abstemious, and extremely negative towards human desire and monsters. For that reason, they're merciful, with a fundamental distaste for fighting, yet they will still make an effort to mete out punishment in the name of god. They were not originally monsters, but those who've been corrupted a demon's energy and have started to seek desire are treated as monsters. Angels have innate divine protection. Due to this, they have resistance to mamono mana, and they don't completely change into demons. The horn and tails normally seen in demons will not grow, but their mind becomes warped after being thoroughly corrupted by demon energy.