What if Y/n the most known opera singer in teyvat, find themselves in a different world that worships villains? Well come and find out. First book. Sorry if my English sucks. I update very very slowly, so the long...

Y/N is Malleus' twin sister and is also an assassin finishing her grandmother's regards. As she was finishing one of her missions she got teleported to somewhere she doesn't know. Little did she know that going the...