He entered the world-famous private Sidia Academy with the first grade in his school year. He thought that a harmonious, peaceful and beautiful campus life would be waiting for him, but unexpectedly, with a piece of paper, he walked into Class S, the most special class in the academy, and moved into dormitory Z-11 with a completely different style. There will be no more peace from now on. His life changed, and Sidiya Academy also opened the most peculiar chapter because of his arrival.