In the 420th year of the Gregorian Calendar, Nanna Magic Academy was officially founded. Dean Harry Edward and the five kings of the Aihuapu continent held a canonization meeting to commend outstanding magicians from various countries who had fought against aliens in the past few decades. At the end of the canon, all the magicians announced that they would join Nanna Magic Academy as representatives of various countries and become honorary professors.
In the same year, Nanna Magic Academy declared neutrality and would not intervene in the mainland war. However, citizens from various countries in the mainland could still join the academy to learn advanced magic after being selected by the mobile office affiliated to the academy.
At the beginning of this year, the Aihuapu continental era changed from the orthodox calendar to the Nanner calendar.
In the year 643 of the Nanner calendar, the years of war on the Aihuapu continent once again gave the alien races an opportunity. In the same year, in order to save the people of various countries on the border, Nanna College announced the establishment of the Alien Thorn Action Team to help the empire's borders fight against alien races.
And Nanna's story has just begun.