Sister-in-law of the Heroine in a Childcare Novel

I was reincarnated as a supporting villain character. A tr*shy princess who was obsessed with the big brother of the cute heroine and eventually poisoned the heroine to destroy her. I made up my mind and prepared to run away. After saving the heroine, things went wrong. “Those who touch her, chase them to the end of the world and destroy them.” “Imperial family? The incompetent imperial family that makes Titania unhappy. They don’t matter anyway.” “Hahahaha, they call me a mad dog. If a mad dog ​​bites people, is it crazy?” Gee, calm down everyone. Because I’m leaving to enjoy my dreams, hopes, and money in a seaside villa with beautiful waves! Everyone should be happy too! I thought...