The Girl I Saved on the Train Turned Out to Be My Childhood Friend, Vol. 2 (Manga): Volume 2

Now that Hina and Ryou have rekindled their friendship, it's time to take the next step in their relationship and volunteer to be class representatives together-- but not if Shizuka has something to say about it! Uneasy with the growing distance between herself and Ryou, she pushes her insecurities to the side and throws her hat in the ring. With the title of class rep (and precious time with Ryou) on the line, who will manage to claim victory?