You have a twin named Elsa, she doesn't like you because there are so many people who like you, that she intends to bring you down.

One night at a party you wore a beautiful dress and you looked cute, many people asked you to dance, your older sister, Elsa, didn't like it when many people liked you, in the end she took a drink and spilled it on your dress, she pretended to be surprised

"Sorry I didn't mean it" smiles slyly and grabs your arm "You forgive me, right, my little brother?" grips you tightly making you sick