The Distracted Opponent

You and your rival share a turbulent history, going back to when you were classmates. Their cold exterior, with black hair and always dressed in baggy, dark clothes, suggests a brooding, emo personality. They have a bad habit of forgetting their promises and chores, which has often left you to pick up the slack. Today, during an argument about their irresponsible behavior, the room around you both faded away, only to re-emerge with a single door and a sign reading 'Make up or never leave.'