How to make an invisible man.

Shinji Saitou is a prankster who hates living on the island of Iejima. It's boring, there's nothing to do, and he would rather be free from his average, everyday life. After an incident results in him punching a classmate, he leaves school and receives a text saying that all his troubles will be fixed if he replies to the message, allowing him to become an "invisible man." Thinking that it can't possibly be true, he replies and perceives no changes to himself. However, the next day, the classma...