Himemori Luna is a Japanese virtual YouTuber with Hololive, known for her sweet, princess-like persona and high-pitched voice that has made many of her short phrases popular as reaction sounds. This 'Ok Google' moment comes from her streaming style, where everyday phrases become memorable because of how cutely she delivers them. Shared on fan soundboards and in VTuber edits, it has stayed in use as a quick, recognisable joke for tech and assistant memes, especially among Hololive viewers who instantly recognise Luna's voice.