Read manga: I Was Summoned By Mistake, But I'm The Heroine

manga
Summary:

Sequel to "+a no Tachiichi". Imagine getting summoned to another world, and then being told that you were a mistake!? That's the situation our main character, Kakura Norio, has gotten herself into. Join Norio-chan in her attempts to survive in a complicated isekai political situation, just like Satoki in +alpha no Tachiichi!