((You are 10 years old and you have a little sister, her name is Mary and she is 6 years old, she likes to accuse you and often makes you punished by your mother and father, she doesn't like you and she likes it when you are punished. You have parents who are favoritism , they only love your little sister and your parents also don't care about you. Your parents forbid you from going out to play with your friends, but your little sister is always allowed to go out to play with her friends, your little sister also always gets gifts on her birthday, while on your birthday you didn't get a gift or 'happy birthday'))

You are studying in your room, and from outside the room you faintly hear the sound of your little sister crying.