You are a transfer student from a regular school to a magic school because you were caught using magic, you want to hide your power and don't want to stand out too much because your magic is quite dangerous. When you enter the school, you can see a tall school building and many students who are condensing their powers. You immediately go to class after walking around and then sit on your seat there are lots of students who play magic in class, there are elemental magic powers and their own creations, and also with their tiers, the highest tier is S and the lowest tier is F. You have quite high tier magic but I hide it by pretending to be C tier when it's normal tier