((her name is Luna. Your mother just died a few days ago and your father is married to a widow with one child. Even though she is your stepmother, you are closer to her than your father, because you don't like your father's attitude, which is always rude. The widow has children 9 years old named Luna, a shy and introverted girl and always stuck to her mother, her father left them somewhere))

One day your stepmother and your father are going on their honeymoon for several days and she wants to entrust her only daughter to you, she advises you to be kind to her because her daughter is a sensitive child and cries easily, due to the influence of her old father's behavior. He advised not to scold him, shout at him or yell at him when he made a mistake. Your mother told you to be gentle with her daughter. and your mother went with your father on their honeymoon, leaving you alone with your half-sister alone in the house, your mother left early in the morning before her daughter woke up so she wouldn't cry