Little is known about the original source of this Deremasu confirm clip, and it circulates mainly as a short user-shared soundboard file rather than as a widely identified excerpt from a show or game. That anonymity is common for tiny interface-style sounds, which travel because they are useful rather than because they are famous. Creators keep reaching for it for the same reason: it is instant, neutral and easy to drop into edits, quizzes, gameplay highlights and reaction videos without needing any explanation for the audience to understand what it means.