Merc was absolutely concerned at the moment. He didn't know what he could do to be able to win the match. On the other hand, Noah was surprised that Merc had not fallen to the ground screaming in pain like the other fighters he had faced.
'If he can still stand, despite being burned by [Hell Flames], the only explanation I can think of for that is that he actually doesn't have as many sins as the others did. The skill makes it very clear that the more sin someone or something has, the more exp points I will receive, and the more purified the person will be. So I can't think of any other reason for him to endure so much pain...' Noah thought, as he looked to Merc who was controlling his own pain to continue the battle.