An introverted student named Ruruxi can't confess to a girl he likes named Arlind, makes him freeze every time he sees her. Then, one day, a mysterious light came out of nowhere from above and hit Ruruxi, causing him to be more pessimistic and giving him a mysterious power, but he wants to get rid of it. He didn't know that mysterious light came from another world called "Eutopia". What lies beyond that world? What kind of phenomenon will happen to their lives?