One of the replacement mom's Matsumoto was one of the best. She mothered Ai as though the girl were her own daughter. Ai wasn't used to it at first and was at first untrusting of her. However as time passed she grew used to being hugged and looked after and she soon grew to care for the woman a great deal. She started to see her a real mother.

It was a cruel shock to find her droned and Ai was very sad for a long time after that happened.