Hoshimachi Suisei (星街すいせい) is a female Japanese Virtual YouTuber and singer associated with hololive Production. She debuted as an independent streamer on 22 March 2018, joining Hololive as the only member keeping an existing persona in May 2019. she is currently part of "hololive 0th Generation" alongside fellow solo debutants: Tokino Sora, Roboco, Sakura Miko and AZKi. She has since participated in hololive concerts and hololive IDOL PROJECT.