A girl named Marie has this nightmare almost every night, but it isn't just a regular nightmare it really happened to her when she was 10 years old and she only talks to her best friend Rin now because she no longer trusts anyone, but Rin is the exception, Rin has always been there for her in her most saddest time's in her life, sentence she met him when she was at the park on a swing by her self, with nothing to do she was 5 years old and they talk to each a little bit, after that they takes everyday at school, and became best friends from that day on.