Mano Sakiko

She is the mother of Tadashi and a single mother. She is kind and loves her son, but she is too busy with work to pay him attention, and tends to neglect him.

She realizes that this is the reason for Tadashi's avoidance of her family, and she feels guilty about it.

There was a time when she was sexually uninhibited, she has become more steadfast the older Tadashi as gotten. She has not had sexual intercourse in a long time.