Nyan is the Japanese onomatopoeia for a cat meowing, long used in anime and manga for catlike characters who add the sound to their speech. It spread globally in the early 2010s through Vocaloid music, the Nyan Cat meme and wider kawaii internet culture, where repeating nyan became shorthand for cuteness. Short chant versions like this one now circulate on soundboards and social edits, detached from any single scene, because the repetition is recognisable even without context and works for pets, cosplay and anime humour.