Fate/DXD:Arbiter of humanity.

What happens when a weak soldier, having spent too much time in an uncertain war he was sure he wouldn't return alive, manages to return to his homeland as if the war never happened? Or rather, what happens when a "hero" without a title worthy of being heard in songs and chants, without recognition from humanity or the world, without renown to know about his origins, a completely ordinary man, achieves a miraculous victory against a being that was trying to replicate the universe as we know it, and manages to survive unscathed even knowing that "death" was an absolute certainty? Ideally, the person who went through such turmoil would return to a normal life and live the rest of their life growing in society and having goals that most of us normal humans have; however, reality is totally different. It is impossible for a person who has spent many years living a life full of action, blood, and chaos to return to being an "ordinary person" in society. Even if the individual tries, the reality is that even if you are outside the war, the war never leaves you. This is the story of a man who, from the beginning of his journey, had no future, but after a favor from a certain Telescope Wizard, he managed to have a new "future." However, this future ends up attracting the attention of many deities, demons, angels, beasts, heroes, and villains around the world. Fortunately, being close to death and having a life filled with conflict is "normal" for our protagonist; his luck is that he won't be alone on this new journey.