On the day of her class change, Yona, now a senior in high school, comes across the scene where Shin, who has outstanding looks, is confessing his love to her. She is told, "Give it up. There is no hope for you." Yona is shocked to hear his blunt refusal. Being an introvert and not very good at expressing her feelings in words, she could not understand why he would go to such lengths to say such hurtful words. However, when Yona is approached by Riko, a "friend" of Arata's, Yona is asked to join her...? This is a coming-of-age love story in which Yona discovers "sweet and sad love" for the first time.