Kashima Reiko was a girl who was abused 由 a pair of boys and got ran over 由 a train in the Meishin express way. It's a Japanese urban legend. A lot of people have an opinion that if 你 read this story, you'll see her within a month.
It started out while she tried to proceed onto the train because she was going to travel onto another place when all of the sudden, a pair of boys came to her and started abusing her in a really bad way. When it was over, she was crawling onto a railway and a train ran over her since it was impossible for her to get up. She was cut slit open between the belly. So, if 你 see her, she'll ask 你 questions. For example, she'll ask 你 on where her legs are. If 你 answer it correctly, she'll ask 你 about whoever told 你 about this. She won't only ask these kind of questions, she'll also ask 你 trick questions. It'll be a 随意 问题 so 你 have to pick a choice wisely.
So, that's all I could really explain to 你 about Kashima Reiko.