Nya is the Japanese word for a cat's meow, and neko-chan is an affectionate way to refer to a cat or a cat-eared character, so this kind of clip sits at the intersection of anime fandom and internet cat culture. Short, cute voice lines like this spread through VTuber streams, anime edits and TikTok soundboards, where a single instantly recognisable syllable can signal a whole character type. It stays popular because it is versatile, non-verbal enough to work across languages, and instantly conveys playfulness without needing subtitles or explanation.