Time Travel: Summon Digimon at the Beginning

As a top assassin in the underworld, Hanasang died in a fight and traveled to a different world. He became Master Nafir. Not only did he possess the abilities of his previous life, but he also got a Digimon Machine, which can summon all kinds of monsters in the Digimon. From then on, he was able to call the wind and rain in this other world and dominate the world!