A strange tale of time travel that doesn't try to be serious or explain the implausible science others usually do. The comedy is really well done and the story very character driven. It reminds me much of Turtles Are Surprisingly Fast Swimmers, which is another strange comedy from Japan. I like how here we are clueless along with the characters so we explore the situation along with them. While there is much that doesn't work or is just wrong from a "realism" standpoint but its not meant to be real. Just enjoy being swept along with the situation, finding answers and not finding answers as whatever happens just happens. Its just plain fun so sit back and enjoy the lack of stereotypical characters and events, maybe with a drink of hot chocolate.