Kischusaki Onna it's an urban legend from Japan, the story it's like this, she walks around the city with a mask, she will ask you if she's pretty, if you say yes, she will take out her mask and ask, 'am I pretty now?' But if you say no she will cut your mouth, if you say yes but you lie she will cut your mouth, if you say yes anyway without lying she will give you a bloody diamond, and if you say not now or that you're busy she will bow, apologize and leave you alone