The full title of this book is The Villainess Young Lady Development System: I Won't Get in Trouble Just Because I'm Using an Alt Account to Become a Vtuber.
In short, this is a story about someone with a Villainess Young Lady Development System who uses an alt account to be a Vtuber, simps for all sorts of Vtubers under that identity, and occasionally stirs up trouble as a villainess young lady.
World setting: A parallel modern world, Love Live! (μ's, Muse), Girls und Panzer, Assassin's Creed, Watch Dogs, Detective Conan, Ouran High School Host Club, Kaguya-sama: Love Is War, SAO, Date A Live, Danganronpa