A heroic player did not listen to his parents even though he was preparing to take the university entrance exam. One day, Yotsuba, a tutor, went to such a hero. A hero rebelled against Yotsuha, who tried to teach him indifferently. Among all of this, she suggested that if she learned from Yotsuha, she would give him a kiss as a reward. At first, he was a hero or mock him, but when he saw the seriousness of Yotsuba ...