Lkyt.

The end of the world is nigh. The demons that threaten to destroy it inhabit the barren wasteland on the fringe of this world of the living. There was a group of people who made it their mission to stay in this tainted land and resist the progression of the demons. These were the people of the land of Migiwa. In accordance with the law, they strengthen their defenses against the demons and live their days in tranquility. That hopeless day remained a legend of the distant past, and their return was considered to be one of the distant future. One night, however, the alarming sound of the emergency bells resounded through the capital. Why? Why was it happening now? In a battle that holds the fate of the world in its hands, our young hero finds the answer to this question… [Summary translated from official site by ☆BL News☆]

The end is nigh. A barren wasteland at the edge of the Earth is home to demons that have destroyed the world. There are those who have chosen to stay behind in these desecrated lands, dedicating themselves to resisting the demon threat. They are the Seaside Nation. By their code, they spend their peaceful days fortifying themselves against the demons. Ancient legends are all that remain of the Day of Despair, and its second coming was thought to be far in the future... But one night, warning bells ring out through the capital. Why is this happening? And why now? Our young hero will find the answer in a battle to determine the fate of the world...