Chapter 1: Prologue

There's a saying that the enemies of your enemy are your ally but........ What will happen if your common enemy is gone? What will happen to those who helped you defeat your enemy? Of course, you all would be friends because of the experiences that you guys shared, right? or not. Well, all of it is just a child's dream.

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[Hero] is a title that is given to the beings that came from another world to beat the [Demon Lord]. [Demon Lord] is the being who spreads fear, sorrow, and death throughout the world. But that is all just in the past, the [Demon Lord] is defeated and the hero returned to his former world and peace prevailed in the world. This is what's supposed to happen but after the [Demon Lord] perished countries fought over the land that the [Demon Lord] once owned and conquered. Another war occurred only ending when the countries suffered great losses. Peace returned for the first time, though unbeknownst to everyone a nightmare will be born shortly after.