Vermillion

From Fallen Syndicate: By using the Dark Gate, humans can entrust their hopes and needs to the darkness. The darkness they call upon is a great and evil power, known as "Demon." WIth the help of his partner Miroku, the Demon Slayer Kisaki Senju will slaughter every last "Demon" that is called into existence.

Author: SATOU Atsuki
Genres: Action ,Seinen ,Supernatural
Status: Ongoing