Yuuma Azawa

As a result of a ritual where he had summoned the Devil, Yuuma is seemingly cursed with making the brains of those he apologises to or complements slowly melt. However, despite appearances, this is not a curse; rather, the Devil granted Yuuma with these powers willingly, and every time he seemingly does so, he is actually in contact with the Devil himself. (Ignore the goofy pic and voice lol)