The sound comes from Mayuri Shiina, a central character in Steins;Gate, whose tuturu greeting became one of the anime's most recognisable catchphrases after the series aired in 2011. Fans clipped the line for reaction videos, AMVs and soundboards, and the English dub version gave international viewers their own version to quote. Compared with the original Tuturu sound, this dub keeps the same playful rhythm while changing the voice performance, which is why it remains a popular shorthand for cute, cheerful anime energy online.