The line comes from Raiden, the cyborg protagonist of Metal Gear Rising: Revengeance, the 2013 action game where his violent past and personal code drive much of the story. Clips of his dialogue circulated among fans and editors long after release, and this short moment stood out because it sums up his motivation in a single breath. It later spread through gaming edits and short-form videos, where creators reuse it as shorthand for refusing to quit, keeping it alive well beyond the original game.
About this sound
Raiden's line Pain, this is why I fight from Metal Gear Rising: Revengeance, used in edits and memes for a determined comeback after a setback.
The clip is Raiden's short, gravelly voice line from Metal Gear Rising: Revengeance, delivered with a strained, almost exhausted intensity that suddenly hardens into resolve. You hear the pain in his voice first, then the shift as he explains why he keeps fighting, which makes the moment land as both a confession and a declaration. It is not loud or shouted, but controlled and heavy, so it works as a turning point in a video: the beat where a character, player or creator stops taking hits and decides to push back. That contrast between suffering and determination is what gives the sound its dramatic weight.