Grandmother died a day before the twins' 13th birthday.
She was a famous children's doctor and worked in the Anju hospital.
Grandmother was very hard to please and did not talk much.
She gave Ai the parfume bottle when Ai was very little. She said it was the magic of the girls in the Anju house.
Before she died she told Hana and Hoshi to tell Ai about the family secret.