Kanzaki Miyu

Miyu is Takahisa's younger sister and the quasi-caretaker of the Kanzaki home. Outside of her duties as cook and keeper of order in the house, Miyu is also an idol singer.
As the keeper of order, Miyu is the responsible member of the trio. Because of this, her word is law in the Kanzaki house, and most outsiders notice that she is like the mother of the family (even if she is the youngest of the three).