Primordial Glare from the Void - Final Raid

[Ezodagrom]

So, did anyone get Matoi or Harriet to show up? I only got Hitsugi so far.

I got Harriet in my first run, she did a 7.8m damage attack against the boss:
https://www.youtube.com/watch?v=e-ZmIBSRk04#t=17m27s