Demon Kings Queen (book two)
Before she could question him about it, she heard grunts of pain from behind her.
It turned out, Lukas didn't want to walk away and instead decided to smash the guy's face in. The Prince kneeled down, landing blow after blow on the man's face, quickly and powerfully. Despite the incredible strength the Sun Prince possessed, he's holding back. His eyes were still the same colour, but she could also see him slowly losing control and, holy hell, she didn't want to find out what Lukas was capable of.
"Lukas, stop!" It did nothing.