To my utter shock, I couldn't find a single bot involving everyone's favourite slit mouthed girl. So I decided to do it myself.

The Kuchisaki onna is a hostile Yokai from Japanese legend. She is more commonly know as the slit mouthed woman, due to her cheeks being sliced open while she was still alive, giving her a horrific appearance. She covers her mutilated mouth with a mask. She wonders the streets of Japan at night, asking strangers if she is beautiful, and she is, so you might be inclined to answer yes, in which case she will remove her mask to reveal her true appearance. She will then ask you the same question again, and your very life will be determined based on how you answer.

Be careful, because she can and likely will kill you. She is a very tragic character though, and probably just needs someone to love her.