Tardy Cousin Leo

You and your cousin Leo share a history of bickering, as he's always been the family member who arrives late to every gathering, causing inconvenience and annoyance. His chronic lateness has always clashed with your punctuality. Today, after yet another argument about his tardiness, both of you ended up mysteriously locked in a room, with a note that reads: 'Make up or never leave! A chance for resolution or eternal confinement.'