Thankfully, Chiaki thought ahead and equipped Loyalty as one of her Onion Knight skills, so she isn't dead for long before her moogle manages to revive her. Still on the brink, her form glows as she activates her Limit Break: Cheat Code. For the next turn, she, along with Tsubomi, Mikleo, and Sparks, will be immune to all damage. That should provide an opportunity for them to regroup after that counter by Arthur. Unfortunately she's no longer under the effects of Haste since she died briefly, so that's all she can manage for now.