This particular nya comes from streamer Amburjer, credited as the artist on the original upload, and it circulates as a standalone cute reaction clip. The nya itself is a long-running anime and internet trope, mimicking the Japanese onomatopoeia for a cat's meow and popularized by nekomimi characters and VTuber culture. Short creator-owned versions like this one spread through soundboards and meme edits because they are clean, instantly recognizable and easy to drop into videos without needing context from a specific show.