Moshi moshi is the standard Japanese greeting used when answering the telephone, roughly equivalent to hello. Shinobu Kocho, the Insect Hashira in Demon Slayer Kimetsu no Yaiba, made the phrase her calling card by repeating it in a cheerful sing song way, most memorably while trying to get a reaction from the stoic Giyu Tomioka. Clips of her delivery spread through anime edits, TikTok and soundboards, where the familiar greeting became shorthand for a cute but teasing entrance. It remains popular because even viewers who do not speak Japanese instantly understand its playful intent.