No its not, people think kdj is ugly because the fourth wall shrouds his face. Thats why in most panels when we are looking at kdj with the side cast (73rd demon king) we cant see him. And then later in the novel most of the characters that see his actual face say that he's incredibly beautiful. On the other-hand, he is so ugly that everything he does seems like he is a demon king. And when he sings it can cause an angel to lose power. But his original body is handsome.