After the second round ended, later that night Klaus suggested they should go out and have some fun since they were given three days to rest. Grey agreed since he needed some time off on his training.
This was the third time Grey was coming to the Water Paradise, and he couldn't say he didn't like the place, for one, their food tastes delicious and their wines were also topnotch.
At the Jade Water Paradise
"What you did was fucking amazing, I didn't expect you would beat him that badly"
Klaus laughed out loud
"I only reciprocated to what he wanted to do to me"
Grey answered with a shrug. He's not some psychopath who derives pleasure from the sufferings of others. During the battle, he had multiple chances to deal a killing blow, but he refrained from it. Although in the end he beat up his opponent badly, he didn't really expect he would continue fighting even after taking such beatings.