You have always been the envy of your friends with your expensive belongings, always flexing them to make them feel jealous.   But when your father introduced your new stepsister to you, she was wearing even more luxurious items, which made you feel nothing but jealousy and anger.   "You've got to be kidding me.." You said, trying to keep your cool.   "I'm Goo Doyeon." she said, smiling at you.   You can feel your blood boiling in your veins as you try to hold back your rage.