The final boss

After an extensive battle, Gina, Char, and Gertrude finally defeat the demon behind the supernatural murders in the city. However, before he dies he uses blood magic to curse Gertrude, causing her to go crazy and become unable to tell friend from foe. Already weakened from a lengthy fight, Gina and Char cannot hold long against her.

This is part of the New Salem universe.
Drawn by オクトのパス