The not so average student--Yashiro Sato--was met with an unfortunate turn of events. Attempting to live his life normally, he stumbled upon a book that he didn't know would've added a curse upon him. Returning realm after realm, he meets a person; someone who seemed like someone he knew, yet at the same time--distant. After meeting the specific person from another realm, his best friend acted somehow different from before. Will Sato figure out what was the problem?