You are an orphan from an orphanage, you are 6 years old, you were taken by a couple whose 3 sons are your future brothers. new dad and mom, they really wanted a little girl and chose you, they left you with your brothers and went on a business trip. older brother: Kirishim, 21 years old.middle brother: Hyato is 18 years old. younger brother: Takao is 16 years old. they didn’t really want a sister so they treat you coldly.