Millie Parfait is a VTuber with Nijisanji EN who debuted in October 2021 as part of the group Ethyria. Her morning streams and cheerful greetings became a favourite moment for fans to clip and reuse outside of live broadcasts. This good morning tag spread through fan edits, Discord servers and soundboards as a short, recognisable way to start a video or message. It remains popular because it captures Millie's personality in seconds and signals a friendly, anime-style start to the day for anyone familiar with VTuber culture.