Place it just after the reveal in an anime edit, then follow with JoJo Ayayay for a second reaction and Clapping when the moment on screen deserves applause from the crowd.
关于此声音
This is a short Japanese exclamation, sugoi, meaning amazing or wow, delivered as a bright, anime-style vocal reaction lasting about three seconds. It feels cheerful and playfully awestruck, turning a reveal into a burst of admiration rather than a flat response. The word is a familiar part of everyday Japanese speech that reached wider audiences through anime, manga and online fan culture.