Ienaga Mugi is a female Japanese VTuber and a member of Nijisanji's second generation. She is a nineteen-year-old high school student who loves video games but is a terrible cook. Mugi enjoys visiting museums, reading books, and writing novels. She has bad eyesight and sometimes confuses garbage bags with cats. Mugi started streaming because she wanted to make friends. Her YouTube channel was created in March 2018, and she has reached various subscriber milestones over the years. Mugi is part of the 2nd generation of Nijisanji, along with other virtual influencers. She is known for her unique personality and charming quirks, which have endeared her to her growing fan base.