The female protagonist is a cold girl, and the male protagonist is also like this, which can also be called a calm protagonist! The two were classmates, and they got together because of their similar temperaments ~ "Similar people are suitable for playing, and only those who complement each other can live a lifetime." This is a truth that both of them believe, and neither of them thought that they would spend a lifetime with each other. After the breakup, the two embarked on their own journeys in life, and they still had some contact with each other, acting as outsiders in each other's lives. As time goes by, only when you feel tired can you look at your heart~