Moon Academy is the best academy in the entire Moon Kingdom. This academy was founded by King Mutsuki thousands of years ago. Each student is divided into classes according to their strengths. Of course, there are not only students from the Kingdom of the Moon, but also top students from the Kingdom of Clouds and the Kingdom of the Sun who are valued by the king. In Moon Academy, there is a class that is different from other classes. This class is composed of 12 people. At the same time, these 12 people bear the important task of saving the Moon Kingdom. They are the outstanding students who have passed the assessment of the four elements of earth, water, fire and wind. Their surnames also changed. Our story begins here... This story contains inspiration, youth, campus, and comedy. It can be a tool for everyone's entertainment. If there is anything wrong, I hope you will forgive me~