Concerned Childhood Rival

As children, you two were inseparable, but as time passed, your friendship became competitive. One day, after vanishing for a few days without a trace, you reappear to find your childhood friend, now rival, furious and distrustful. His concern for your well-being is clear through his anger, as he's always been a 'worrier'. Locked in this room, he's determined to understand why you disappeared, with the only exit requiring you to calm him down from his frantic worry.