Hikari Kirishima

Hikari Kirishima (霧嶋 ヒカリ, Kirishima Hikari) is the late mother of Touka Kirishima and Ayato Kirishima, the late wife of Arata Kirishima, and the late elder sister of Renji Yomo. She was killed by Kishou Arima prior the events of Tokyo Ghoul.

Appearance
Hikari had light-colored hair, with bangs that covered her right eye, just like her daughter.

Personality
She was apparently very 'tomboy-ish' and strong willed. Yomo described her as being talkative and strong. She would sometimes tease Yomo with bugs, showing that she had a sense of humor.Hikari's kind and gentle personality only developed after she fell in love with Arata. In the past, Yomo recalled that Hikari was a wild child, killing and eating humans. Her children have also inherited her previous wild tendencies which is noted by Yomo.

Plot
Hikari's parents and brother were killed leaving her the sole caretaker of her younger brother, Yomo. They stayed together until she formed a relationship with Arata and they started their own family. After she gave birth to her daughter, Touka, Hikari introduced her to Yomo as an infant and promised that no matter what happened, she would always be his big sister. Hikari was killed by Arima shortly after her son Ayato was born.

Renji Yomo
Her younger brother, she took care of him after the deaths of their parents and brother. She often teased him as a child, but loved him dearly. After her death, he sought power in order to avenge her.

Arata Kirishima
Her husband, she met him at some point in life and the two fell in love. They foster two children is shown to have a stable marriage relationship. After her death, Arata sought power in order to protect their children.

Touka and Ayato Kirishima
Hikari loved and cherished her children after they've been born. It is said by her brother, Renji that they both took after her personalities.

Quotes

 * To Renji: "Ren. Even though I now have a child, and even if you get annoyed with me or even if you hate me. And even if I become an old lady... and even if I die. I will always be your older sister."