Midnight Stranger manga volume 1 features story and art by Bohra Naono.

Roi, a black goat spirit, is getting bullied when out of nowhere he’s rescued by the beautiful fire god Xiu. Xiu gives Roi the ability to take human form, and a grateful Roi decides to serve Xiu as his new master. Now by Xiu’s side every day, Roi wishes to become more than just his servant. Painfully aware of just how ugly he is, Roi believes Xiu could never care about him, and one day something happens to bring Xiu's wrath down on Roi. What must he do to gain the fire god’s favor?