Nobuko Ishihara

Nobu has an affectionate nature, and exhibits protective behavior over both Risa and Nakao. Because of this affection for Risa, Nobu frequently lashes out at Ōtani for being inconsiderate towards Risa's feelings and equally lectures Risa for allowing herself to be put in frustrating situations. Her behavior towards Nakao is vastly different than it is towards any other character, full of loving words and baby talk. Nobu is very refined around her family and worries greatly for her grandmother's health, even going as far as moving to Hokkaido with her after high school despite this putting strain on her relationship with Nakao.