User blog comment:Mikaxyuu1/Mika demon? But... demons have a heart?/@comment-36009152-20200726235242

Some good observations! Will post here how just like Shinoa turning into a vampire was a transition stage to make her easier fro Shikama Doji to possess, so too could this Black Demon stage be another phase like scenario for Mika. A physical explosion, sounds, and Noya sensing something amiss, it's not exactly demon sounding but it does sound seraph related!