Ken Kaneki's mother

Ken Kaneki's mother is a kind housewife and lady. She was like the ideal mother and good woman. She merely died because of overwork.

Personality
She was always so kind. She believed that a kind person finds happiness just by love and becoming the person who gets hurt, rather than hurting others. She wouldn't refuse any request of help and was equal to everybody in her kindness.

Rize in Kaneki's mind and "illusion" described her over kindness as weakness, saying that she couldn't choose someone over the other and even died because of that.