Amamiya Souta, an adventurer who is called the strongest, has reached the “Rakuen no Mon”, the gate where you can go to the world of dreams, but you have to use the “Shinjitsu no Mahou” to open the gate. He must attend the Magic Academy to master this magic. 　Knowing that fact, Souta decided to go to school. However, on the way back from passing the transfer exam at the school with a perfect score and going through the transfer procedure, an important sword was stolen by a large bird. When trying to catch the bird, the large bird drops a sword and falls. Where he fell down is a girls bath!? 　There, Souta push down Lina Marianes, the third princess of the kingdom, and see her naked. Furious Lina applies for a duel with Souta, but on the day of the duel, a huge demon beast comes to attack the school. ――This is a story about Amamiya Souta, the strongest adventurer who breaks common sense, meets his friends at the school, confronts the mighty enemies that are rushing in, and unravels the mysteries of the world with his friends!