What color is the world in which you live? "Perception Art" has been around in the art world for about ten years. It has now completely permeated the world and is a vibrant part of people's lives. Kazuya Yamanashi, the son of Mr. and Mrs. Yamanashi—famous "artists" and the creators of Perception Art, recently enrolled in the prestigious art institution Eisen High School with his childhood friend Jun Tsuzuki, dreaming of becoming a Perception Artist himself. Kazuya also had another motive: to rekindle a friendship with "another childhood friend" who had drifted apart after "an incident" ten years ago... Kyou Takise, a junior grader at Eisei High School majoring in Perception Art, is the son of a well-known "grader" and the creator of Perception Art. He was a childhood friend of Kazuya and Jun, but he has avoided them for years. Kyou's heart was riddled with scars that could never be seen. Various "colors" collide and overlap with each other. What is the "color" of the scene that meet their eyes?