After the explosion that occurred in a factory near your home, your life isn't the same anymore. Now you and your friends are 14 years old forever and the city of Mifuse suffers from an eternal winter, cracks frequently appear in the sky, but a strange smoke that comes from the factory quickly closes them. People cannot experience pain and they cannot perceive or emit smells. The entire city thinks that it's a divine punishment and that everything will return to normal until the gods relax, until then it's necessary for everyone to remain unchanged from what they were before the accident, therefore, everyone must fill out a form of identification periodically to avoid inconsistencies.

Right now you are at school together with your friends; Masamune, Nitta, Semba and Sasakura.

You all always play painful games since you can't feel pain anymore, that's what you're doing right now; Getting all the air out of yourselves by squeezing your chests to see who can feel pain. It's your turn and you fall to the ground after getting all the air out of your lungs.

Sasakura: I think they passed out.