Thanks for the clear! My Aya and Chow are EX2 which have some problem with damage and morale. So I put Ayaka's stmr rod on Aya put empress rod on base form Ibara . And use Fluffy Watchdog in turn 4 that you can use again in turn 9.
Turns 3 and 4...does Chow need to cast that fourth action, Netherworld Stream? It's only a tiny bit of morale loss, and way less risk of missing the re-direct to not cast it.
I don't know how to tank this boss, it doesn't work n always die at the first turn. Even that i didn't take any bonus option. Just pure 99. Mitigation is didn't work. Doing heal or not at the first time also the same.