Kashima Reiko was a girl who was abused by a pair of boys and got ran over by a train in the Meishin express way. It's a Japanese urban legend. A lot of people have an opinion that if you 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 you see her, she'll ask you questions. For example, she'll ask you on where her legs are. If you answer it correctly, she'll ask you about whoever told you about this. She won't only ask these kind of questions, she'll also ask you trick questions. It'll be a random question so you have to pick a choice wisely.
So, that's all I could really explain to you about Kashima Reiko.