Tuturu comes from Steins;Gate, the 2011 anime adaptation of the visual novel, where Mayuri Shiina uses it as her signature greeting whenever she arrives. Voiced by Kana Hanazawa in Japanese, the line became Mayuri's most quoted moment and spread through anime forums, GIFs and soundboards as shorthand for her gentle personality. Short remixes and funny pitched versions, like this komik edit, kept it circulating on TikTok and YouTube Shorts long after the series aired, turning a simple hello into a lasting anime in-joke.