The deflect sound comes from Sekiro: Shadows Die Twice, the 2019 action-adventure game developed by FromSoftware. In the game, timing a block at the last moment triggers a louder, higher-pitched clang with sparks, signaling a successful deflect that breaks enemy posture. Clips of perfect deflects became popular on YouTube and Twitch, and the clean metallic ring was ripped as a standalone effect. Editors still use it because it instantly communicates skillful timing and turns any block, dodge or witty comeback into a satisfying counter.