On A Normal Word.. Happened something that wasn't supposed top happen. A Portal Opened on Tokyo, Japan. Monsters came out of it. Some unbelievable People with humans powers helped us and the world became a whole mess. They were rank, E(the lowest one) D(the kinda lowest one) C (the medium rank) B (Kinda high rank) A a high rank) S (a Higher rank) and National Rank( Super Higher), There was Kuroki Katsumi a normal boy who is a E Rank, that lives a homeless and loneliness life but will he get better and grow up as a man? Let's see