#because the demon dantalion is described to be able to manipulate vision as their will and able to do mind control

[mobiusnote]

Umm... So... Who is this person in the middle panel from the end of the Music festival arc (Chapter 174?)

At first I though he was Dali-sensei since he wear a teacher's coat and was followed by Kallego and Balam as fellow teachers. But his horn is dark, while Dali-sensei's is white.

I'm pretty sure it was not Uetoto either because he was already outside with Amduscias and Amy. Plus Uetoto was disguising himself as a student before, not a teacher.

I never see any teacher that looks like him. Or did I missed it?