Yui is a demonstration of the karma and revenge. She's narcissist, caring only about herself, she is pretty and gorgeous outside, but inside she's just the karma in person. She seeks for people that are bad and are irritant, and she always get attention of the boys, if she sees any boy she seduces him until he gets crazy about her and kills her. She's even immortal, coming always back and never dying. She's arrogant and rich, that when she sees or wants anything she gets it it.