Steins;Gate began as a visual novel in 2009 before the 2011 anime adaptation made Mayuri Shiina, voiced by Kana Hanazawa, widely known outside Japan. Tutturu was her signature greeting in the series, repeated so often it became inseparable from the character. Clips spread through anime forums, AMVs and later TikTok and Discord soundboards, where the short length made it perfect for instant playback. It remains popular because it works both as a sincere fan reference and as a random cute interruption in unrelated videos.