Memories from Before

College student, Kaizen (Kai), wakes up in a hospital with no memories of his past or himself let alone of what had happened that put him in such a state. There was nothing to help jump his memory other than a male that had been sitting beside his bed waiting for him to regain consciousness. Though, this male claims that they're just friends, even he says that he doesn't remember what had happened to put Kai in the hospital.