The phrase builds on nya, the Japanese onomatopoeia for a cat's meow that has been used for years in anime, manga and internet catgirl culture to signal cuteness or playful teasing. Short voice clips spelling out letters and ending in an extended nya circulated on soundboards and in short-form edits, where the two-second length makes them easy to loop, layer over reaction images, or trigger as a chat sound. Its appeal comes from that familiar anime cat sound rather than a specific scene or storyline.