My Little Pony: the Simple Villain Siren

When Atlantis was lost, the four sirens took the opportunity to escape. "White Leaf Chacha", as the youngest sister among the four sirens, has the simplest personality and is particularly petite. Fortunately, her sisters dote on her extremely. However, while following their sisters, they attacked Equestria, causing them to be exiled to a world without magic by Star Swirl the Bearded. But the weakest "White Leaf Chacha" was not transported with her sisters. Instead, she came to Crystal Preparatory Academy thousands of years later, where she met a strange girl named "Twilight Sparkle".