Nagi Shinonome, known as the "Ice Princess," is a beautiful girl with a cold attitude who does not allow others to get close to her. One day, Souta Minori, who saw her being molested on the train, saved her with all his courage, but the next day she appeared again and said, "I want you to stay by my side." Can Souta continue as friends with the Ice Princess, who only sweetly melts for one person in the world, that is, himself?