Nijin and Det have started to receive training. The strongest in the universe teaches Nijin his own sword skills and techniques, and also teaches him the sword strengthening ability. When Nijin uses this ability, his sword becomes 10 times stronger, but he can only use it for 30 seconds because it consumes a lot of energy.
Det also learns his own techniques and abilities, drawing on what he learned from Nijin. Then they are both taken to a room and time passes slowly in that room.
The room is a dungeon with unlimited monsters. Nijin and Det go in and spend a year and the room suddenly opens. For Nijin and Det, it seems like 10 years have passed inside the room. During this time, they both made great progress in the techniques they mastered and their powers, reaching level 500.
The strongest in the universe gifts Nijin and Det two light armors made of feathers. These armors are very strong but can only be worn under clothing. He is also the strongest in the universe, who gives Nijin his own old sword, "Eat this sword and take on the properties of the sword you eat."
Nijin feeds all his swords and the sword becomes greatly stronger. Additionally, the sword eats the monsters it kills and thus becomes stronger. Det is also given a ring by the most powerful person in the universe.
This ring is Det's mother's ring and has the ability to teleport to wherever she used to go. But he doesn't go where he hasn't been.
Nijin and Det have now become very strong and they set out to defeat the boss. Before they head to the path of Worlds First, the strongest in the universe tells them, "Come to me after I defeat the boss."
Nijin says, "Okay, wait for us" and the two teleport to the next planet. There is a seer around who sees the future, and that's how they learned about Nijin and Det's future.
Using his newly learned techniques, Nijin defeats the prophets in a few seconds and feeds them to his sword. The seer sees that he is going to die and tries to escape, but even though he knows the future, he is not as powerful as his ability to change the future and the seer also dies.
They quickly defeat their opponents and see the boss's castle, and there are guards in front of the castle. Nijin quickly defeats them and opens the door. Once inside, they arrive at their boss's office and find their boss there. Their boss said, "I was waiting for you, my eyes were on the road."