Okaa-san

Okaa-san is a minor character in the Getsuyoubi no Tawawa series. She is Ai-chan and Imouto-chan's mother. Okaa-san closely resembles Ai-chan in that they both have the same facial features, albeit having longer, smoother hair. Due to having her children when she was very young, people often mistake her as Ai-chan's older sister.