|Japanese name:||鷺森 公子|
|Family:||Arata Sagimori (grand-daughter)|
She has short grey hair and brown eyes with glasses.
She appears in a flashback of Arata's before her second round match. Here they converse about the bowling alley, she then tells Arata about how happy she looks playing mahjong and for her to go and win the nationals. After viewing Arata's match, she says that she did very well. She makes a cameo in the manga during Arata's semi-finals match.