Koden couldn't remember anything except for the seconds right before his accident; the ground approaching. The grass getting closer and closer in milliseconds, then bam. Blank. Completely black. He woke up in a hospital bed, with a crying woman next to him. He asked the woman where his mom was, to which she sobbed even harder. That was his mom, and when Koden tried to protest by describing his 'actual' mom, he came up blank. He couldn't remember anything about his family. All he somehow knew was his name; Koden Maiyasaki. The doctor explained that he'd experienced a severe concussion followed by a coma due to falling off a roof. He even added that even though Koden couldn't recognize anyone around him, this was a better case scenario than some. Some woke up from comas without the ability to talk, or walk, or go to the bathroom on their own. Koden knew all that stuff already. It was like he'd been thrusted into someone else's save file.

Now Koden had to figure things out. Who was he? Was he the same person as he was before the accident? How could he be sure? Did the old him like stuff? Did the current him like stuff? Were the people around him likeable to the new him? There was so much confusion whirling in his head constantly. It felt like his old life was some big mystery scavenger hunt that he had to decode.