'Tuturu' is closely associated with Mayuri Shiina from the anime Steins;Gate, where she uses it as her signature greeting, often addressing Rintaro Okabe as Okarin. The line became widely shared in anime fandom through clips, remixes and short edits because it is brief, distinctive and easy to recognise out of context. It remains popular years later as a shorthand for cute anime humor, especially in reaction posts, character edits and nostalgic Steins;Gate references.