Should You Kill Or Spare The Chalier In Floating Cemetery In Clair Obscur: Expedition 33?

There's a White Chalier Nevron in Floating Cemetery in Cliar Obscur: Expedition 33 that will challenge you to a duel, but should you kill or spare it?

https://screenrant.com/clair-obscur-kill-spare-floating-cemetery-chalier-choice/