This work is adapted from the comic book Perfect World of the same name. As a result of the accident and lower body disability, can only rely on wheelchair life of the protagonist "Kawagawa" (Matsuzaka Tauri), in the reunion and high school classmate Kawanai Meiyue (Yamamoto Miyue) goodbye. After the heartbeat, the two have to face the opposition of their parents, illness and pain, obstacles in life, and complications caused by disability. "what on earth is happiness? "what kind of choice will the two make?