Quote Originally Posted by Unregistered View Post
That's because you're not using atk down debuffs and her regular attack won't one shot your kamihimes if you have 100 HP in union buff. She'd only do that if you're not properly handling her buffs. If you know what you're doing, you can go an entire fight without triggering her buffs, which comes from using her regular overdrive.
Even if you do -50% Atk, even if you do 100 HP, even if you don't let her buff up, the regular overdrive WILL still kill you from full. Probably not if you're also using the Defensive type Soul buffs too, but in a few turns, she'll just do it again. And again. And again.

And I'd imagine that at level 75ish it's literally "play three rounds (add a round for Mordred buff) and you will die, no exceptions"