Ashuramaru

About

The demon into the black series demon blade used by Yuuchirou.

It often warns Yuuchirou about how humans are dangerous and cannot be trusted.

Novel spoiler

Anime

Supporting Seraph of the End: Vampire Reign

Supporting Seraph of the End: Battle in Nagoya

Supporting Seraph of the End: The Beginning of the End

Manga

Supporting Seraph of the End: Vampire Reign

Supporting Seraph of the End: Guren Ichinose - Catastrophe at Sixteen