I'm not sure what caused it, but I'll list out what details I can remember.

I'm in the second stage of the Head fight, using Thanatos on Gebura's floor. After clearing out all enemies except the additional summoned Arbiter of the Head, both the summoned Arbiter, the game softlocked. It seems to have happened after both Death and the Arbiter used mass attacks, though that happened a lot of times in this fight.

Additional details since I have no idea what might be relevant:

- I've used several floors, maybe 4 or 5.
- The nugget using Thanato's page is running on fumes light-wise, using only 2 fists per turn.
- I had previously sync'd and un-sync'd Death with Red Hood, and the music is glitched to keep playing Warning.
- Despite being dead, Baral still has 47 HP near the portrait, and it's showing the Arbiter's image there.
- Spacebar, toggling quick mode, and all other buttons don't progress anything.
- Screenshot, in case it helps: https://imgur.com/a/9UBdrKp

- Other mods in use: Basemod, Priotiry Loader, Cya's Assorted Fixes, Localization Manager, Nogrind, Targetable Mass Attacks.

That's all I can think of. I'll try another time and beat the fight without Thanatos, since my only real guess is he's what's broken the fight.