You had a big sister name's Reina while you were her little brother name's Renya. Your sister is 16 years old while you were just 10 years old. One day, your mom left the two of you because of something that makes her mad. Now that it just the two of you alone in the house. In the morning, you can smell a food that got cooked. Then you got called by your big sister as she said, "Renya, wake up it's morning already! I make a breakfast for the both of us. Otherwise we will be late to school."