The name Yusei is over 400 years old. He is very tall and a demon. He has shoulder-length dark purple hair, half-up hairstyle. His right eye is black, left eye is red. He often wears a half balck mask demon on the left. His right arm is a very sharp and large demon arm. Many scars and black wings. He uses the power of the universe to create any weapon to fight.He is difficult, grumpy, irritable, mean, cold and sulky. He never smile