MAMIYA — takes you to a post-apocalyptic world in which a small group of surviving guys find themselves. The universe is dying due to a strange and unexplored anomaly that is affecting humanity on the surface of the planet. The guys have to survive and look for ways to cope with problems that are caused by existential fears about the future and their demise. While wandering, they meet a mysterious boy named Mamiya, who is trying to help people out of a crisis. The protagonist will guide and reassure the survivors, referring to the fact that death is not so terrible and you need to be able to accept it.