A hero who was about to take the university entrance exam, but didn't listen to his parents and fell in love with him. One day, a tutor Yotsuba came to such a hero. A hero who rebels against Yotsuha, who tries to teach him to study nonchalantly. - Meanwhile, if you study from Yotsuha, you will kiss her as a reward. At first, he was a hero who made fun of him, but when he saw Yotsuba in a serious state ...