Psychologists would call this recovered memory.
Denji was in a car accident when he was a small child, however, he managed to repress/forget about that until he was almost hit by a car again when he was an adult. This brought his memory to the surface and he suddenly recovered that memory he thought didn't even exist.
They would choose based on what tale nt scouts would say about the player and with it determine his ability and salary
I think it means "Technical Knock Out"
Ocean currents occur because of the moon cycles