Synopsis:
Boy dresses as an incubus for a halloween costume, but won't f*ck his friend. Then, he does. Because turns out he actually IS an incubus. Then the guy he f*cks claims to be a priest, and later claims to actually be a demon. The end. Pretty much just yaoi, no bl. Not my thing at all, but I'm sure that if it was your thing, you might like it.
Halloween engage - daiya no ace dj