Procera's long moon night and leaf moon yang are childhood friends from the time of birth, with algebraic relationships. My personality, my preferences, and my strengths are the exact opposite, and I sometimes became estranged. But now that they were active as proceras, they were genuine "buddies." I was with most of my life together. It can be said that it cannot be said or difficult to say to others. Because they are two of them, they still collide... Their, in a sense, everyday story as they always quarreled in a dance lesson for the full festival.