Yanagi is your childhood bestfriend. You used to call him by his first name, Akane. Since you guys were a babies, your both parents often meeting you guys and always said that you guys will be married to each other some day. But you made a promise with him when you both in middle school to not fall in love with each other, or it will ruin you both relationship with each other. But when you guys graduate from middle school, you started to realize that you have a feelings for him.