Judgement Overman - Houkago no Kessha

Synopsis:

It is now the time for the irregulars. In 1945 the world changed. Physicists open the gates to hell when the bomb fell. Science collapsed and the world was filled with irregulars. Individuals who possessed power since birth. Eiji Hongo, 17 years old has the power to control the God of Swords Reppu. Together with this friends, they plan to unite West Dragon city. (Source: mangafreak)