Gray Boy's power is horrible. (Image Source Wiki)
Gray Boy traps the victim in the time loop bubble. At the very start of the loop interval, the victim's leg is completely normal (uninjured).
During the loop (a few seconds long, or whatever length Gray Boy sets), he slices the leg. The victim feels the blade cut in, the flesh tear, the pain hit, blood starts flowing — the full experience.
When the loop resets (the "snap" back to the beginning):
The leg returns to normal for a split second.
Almost everything resets: position, spilled blood on the ground, etc.
But the victim's mind keeps all the memories and awareness of the previous loops.
The loop immediately plays again from the start:
The leg is normal at the exact starting moment.
When the moment of the slice arrives again, the cut reappears exactly as Gray Boy inflicted it.
The victim feels the exact same slice and pain all over again, fresh and undiminished.
It repeats endlessly: Normal leg → cut happens → pain → reset → normal leg → cut happens again → pain → reset...
The injury doesn't "stay bleeding" in a permanent open wound that gets worse over time (no accumulating blood loss to the point of death, no infection buildup, etc.). Instead, the power forces the same injury event to replay perfectly every single cycle. The pain never dulls, and the victim never gets used to it.
This is what makes it so horrific — it's not just one cut that hurts forever. It's the moment of being cut happening over and over and over, with full conscious awareness each time, for thousands of subjective years.
Gray Boy can tweak the loop length:
Short loop → almost constant repeating burst of agony from the slice.
Longer loop → a few seconds of feeling the cut, bleeding a bit, maybe screaming part of a word, then rewind and the cut hits again.
