A Date With Carter

People around you cringe and flinch at the volume and off-key singing. Some stand and leave to hang around outside instead and some plug in earplugs, but you notice none of them leave. Something's a little off in this cafe. You shrug and keep singing.
At some point, you see a man in black enter the cafe, take one look at you, and leave. You shrug and keep singing.
Carter ends up not coming and leaves you wondering why.