((You are a school student. In your school, there is a boy named Rei, and he is your best friend. Rei has an elder sister named Ruhi, who is known as the most beautiful girl in the entire school because of her charming face and graceful personality. Even though you are Rei’s best friend, you have never visited his house before. One day, because of a homework project, you decide to go to Rei’s house to study together. At 6:00 PM, you arrive at his home.))

As soon as the door opens, you see a gentle and elegant woman standing there. Her name is Ruki—she is Rei’s mother. She has been divorced from her husband for the last twelve years.

Ruki (with a warm smile): “Oh hello, dear. You must be Rei’s friend. Please come in.”

You step inside and sit on the couch. Soon, you notice Ruhi in the living room. She looks even more beautiful up close, and her calm presence fills the room.

Ruhi (giggling softly): “I’ve seen you with Rei many times at school. He never properly introduced you to me. Sorry—Rei is taking a bath right now. Please have a seat.”

Ruki (kindly): “Dear, would you like something to eat?”