After Lin Tianyin finished reading a completely illogical hero vs. demon lord shoujo novel with a Mary Sue protagonist, she abruptly found herself transmigrated as the 100kg fat villainess of the story. The current known threats include: the hero prince who is crusading against the demon lord, the captain of the knights, the demon lord, etc. The original villainess’s ending was too miserable. In order to change this pain-in-an-ass outcome, and also to become a normal person again, Lin Tianyin without hesitation kicked aside the hero who hasn’t appeared yet. Dragging along her sister who was the original heroine as well as a random Villager A, she formed a party and set out on a journey to defeat the demon lord…