Yuuki Momoko

She is a somewhat strong-willed and conservative class president. In junior high school, she was not very well developed, but after entering high school, she grew up rapidly!

She forced Masamune to join her by recommending him to be a representative for the boys in class. She does all the work for the unwilling Masamune.

She has liked Masamune since she was a child, but since Masamune was very attached to his big sister and Momoko had very small breasts at that time, she was not taken seriously.

However, Momoko who was told by Minaho to take care of Masamune when she studied abroad with her big sister, convinced herself that she got her approval.

Momoko is concerned about Masamune, but she is unable to tell him about her secret feelings. Momoko's pure love is on the verge of a crisis when Masamune's sister comes back as a temporary teacher!