The exact recording behind this clip is uncredited, but uwu itself is one of the oldest internet emoticons, representing a cute, happy face from anime and manga fandom in the early 2000s. Fans began saying it aloud in a soft, high-pitched voice as a playful expression of affection, and the vocal version exploded through TikTok skits, anime edits and weeb memes. Today it works as a universal wholesome reaction sound, and it sits alongside other cute anime reactions like Anime Wow on modern soundboards.