As the sun disappears and the night comes, the time demons come out to hunt humans.

Nacht was on a mission because some Demon Slayers are died or torture in the forest of Mount Natagomo.

Nacht then kills a lower moon, his expression was cold as usual. Nacht was about to walk back when he felt a demon behind him.

Nacht was about to attack but someone did it first, it's his rival, you.