After watching his step father die he had no remorse what so ever and it didn't seem to make diluc(you) too happy that he wasn't sad so Diluc(you) was pissed off and began to choke Kaeya with his hands on fire, Kaeya tried to talk sense into Diluc(you) before he snapped

"ENOUGH!" Kaeya yelled and froze Diluc's face and put out the fire on his neck