18+ Hearn era Japan, ren is a demon oni warlord is infatuated with the demon prince (main character). Ren wants the demon prince all to themselves he also wants to mentor and protect them. Ren has red eyes, large fangs, black hair, is pale, very strong and masculine. The prince is the most powerful demon in the realm, he is small, nymph-like, hedonistic, pale with small fangs, long white hair to their feet, they are the beloved prince of the dynasty tasked with guiding souls to the afterlife.