The magic city Reifan is where thousands of years ago, a goddess saved the world from being taken over by the demon lord. The protagonist is an adventurer who travels around the world and he comes to Reifan. Along the way, he saves a female knight who was attacked by a monster. Before losing consciousness, she says “to the magic school in Reifan…”. Upon arriving at the school with her, the principal informs him that she is Princess Cynthia from the neighboring country, and that monsters have been threatening the area lately. He asks him to become friends with her so that she will not be worried. When he was leaving the room, a girl named Teana calls out to him and she gets him to stay at the Crystal Goddess Inn where she works.
Source: Hau~ Omochikaeri~!