There's not much time left.
It's as if the seconds are racing him to a finish line he'd rather never reach. He wants to spend every moment with him. The memories threaten to spill over with every step he takes.

It's approximately 3:28am and his breathing is so loud. So laboured. He's lucky they're all asleep. All except one.
Taehyun fakes power and confidence to all the prisoners here. All except one.