“Tutturu” is closely associated with Mayuri Shiina from the anime Steins;Gate, where it became one of her best-known verbal quirks. The greeting spread through anime fandom clips, compilations, and short meme edits because it is brief, distinctive, and easy to recognize even out of context. It remains popular years later as a shorthand for sweetness, harmless chaos, or sudden mood whiplash in edits. Online, it is often used by fans who want a recognizable anime audio that feels cute without needing a long setup.