Watashi Ga Iku Tokoro

a boy named Brian was separated from his sister when both of his parents were victims of secrete assassination, which was coined as a car accident. His elder sister Betty Arizona was a middle school student, a promising athlete, who had a potential far beyond the kids of her age, taking advantage of the situation, their aunt adopts Betty, as an agreement of child custody which was against betty's wishes, as she wanted to live with her brother in Tokyo while starting a new life, but, her plan was crushed as she was forcibly taken away, and Brian ends up overdosed with a drug which makes him forget things happened to him within the day, and the only solution for him to store the memories like a pile was to kick his legs, whenever possible before the end of the day.