Tang San's Twin Sister - Chapter 72

Su Wan is a Realm Destroyer. She shuttles to different time-spaces using the identity of the “Cannon Fodder Ex-Girlfriend”, dedicated to plotting how to happily tear apart the male protagonist and the female protagonist. –There’s no such thing as protagonists who can’t be torn apart, only Ex-Girlfriends who don’t work hard enough~

- Description from Novelupdates

I possessed a third-grade extra villain.I barely avoided the fate of dying from the hands of the protagonist.However, that’s why the Yandere Goddess’s interest turned from the protagonist towards me.[The Goddess of Fate shows interest in you with a sly expression.]

Born and raised in a remote village, Sheila entered the Royal Academy dressed as a man to become the knight of her dreams. However, what awaited her there were only characteristic and beautiful aristocrats. She was able to overcome the prejudice and harassment against commoners, and her natural thickheadedness and good-natured attitude allowed her to gradually gain a place in the school.“What? Only nobles have magical powers? But everyone in our village could use spirit magic.”If the spirit arts that shook the country to its very foundations and her gender were discovered, she’ll be instantly kicked out! Sheila’s tightrope-walking dormitory life began!

The head of the London Association of Mages, the most powerful Saint Archmage in the world, Audrey Davis, accidentally transmigrated to another world due to a magic accident. She was an 18-year-old human girl.