Synopsis
A man reincarnated from modern Japan finds himself dropped into a world of swords and magic. Over the course of 400 years, he trains his body and his craft until he stands at the top as the strongest dark knight in the demon army. His job is straightforward — hold the line against human invasions and keep the demon realm standing. He takes that duty seriously. But he also has something he looks forward to after the fighting is done. Some personal time. Something that keeps him going. And lately, the growing unrest from the human side is eating into…
