Remi Misora

She is a clumsy, often scatter-brained, woman who took over as a teaching assistant at Kaimei High School. She was formerly a host of the educational childrens' show "Can Mommy Come Too?" and tends to refer to herself as "Onee-san". She gets engaged to Tetsuji Chuuma and eventually marries him in chapter 273.

(Source: Sket Dance Wiki)