Jackson Max and Jade had mastered everything their fighting styles incorporated on this world at the age of 60 they were each a monster with this world's powers and abilities than if combined with that of Earth they were even greater monsters. They than were killed in a clash against one another they were revived with everything from their past life naturally transferred to them they were betrayed by the world and left for dead and killed at the age of 60 and then revived as demons under the Demon king recently. John began to train his body and defenses as well as recovery rate and abilities. Fortunately there was a single training place that was perfect for him. The training place had 200 million floors it was beyond impossible to complete this place since it was from when the most powerful ancients and legends myths were alive even they would struggle as this was designed to train and hone their skills none ever made it past floor 10 and each floor is far worse than the previous overtime people and everyone in the world grew weak and were no match for one of the mythical people. John soon found that he was being beaten down on the first level; the penetration attacks that penetrate his defenses and directly hurt him and everything else are overwhelming him. However John already proved that he could do the impossible once before by conquering the survival training chamber. John fought through the pain and took on the training dungeon. John spent decades inside. Meanwhile the Demon lord with his generals Max Jackson and Jade managed to take control over half of the world. John continued to take on the training dungeon. At the age of 100 years old John reached the last twenty floors.