Mori Calliope is a virtual YouTuber with Hololive English, known for her deadpan humour and music as well as her livestream moments that fans clip and share. Her sneeze became a small fan favourite because it contrasted with her usual cool reaper persona, and the clip travelled through fan edits, reaction videos and soundboards where it is still used as a cute reaction sound. Short, recognisable and easy to drop into a joke, it survives because it feels personal to her community rather than like a generic sneeze effect.