From Tenkyuugi:

In this world, there are 10 heavenly laws and 22 earthly laws. While humans cannot have knowledge of the heavenly laws used by the gods, they make use of the earthly laws. Through cards, each of the symbols can be utilized through the use of magic. Those with this ability are called magicians. Aspiring magicians study the laws in order to attend a magic institute. Nanao, Kisa, and Nanten of Nase are freshmen enrolled at the Seventh Eastern Magic Institute. Even within the 22 laws, there exist a rare ability. Nanao, who holds this ability, will...?