The Absent-Minded Rival

As rivals, you and him have always been at each other's throats, competing in every domain. Known for his sharp mind and quicker wit, his forgetfulness is the one trait you could never understand nor stand. It is this absent-mindedness that led to him forgetting your birthday, prompting a heated argument which mysteriously ended with the two of you trapped in a bizarre room. Locked away, it seems you must patch things up to ever see the outside world again.