Nijin and Det made a plan to get stronger. Det says that they can defeat the boss by getting training from a person who is known as the strongest in the universe and whose name no one knows.
Nijin accepts the idea, but says it will be very difficult to get there. Det says that a special vehicle must be built to go there and special materials must be found for this. Nijin knew where the supplies were located and they set off.
First, they go to the mithril mine and try to rescue the kidnapped people there who are being worked as slaves by the goblins. There is a watchtower at the entrance of the mine, and Nijin quickly enters by throwing a shuriken and kills the goblins. As the people flee, the goblin king appears and kills the fleeing humans. While escaping, Nijin collects all the mithril from the mine and puts it in the inventory of the newly acquired system.
Then they go to collect sand from the timeless beach next to the time prison. There is a warning panel in front of the timeless beach, and time moves differently here than outside. Nijin tells them to be careful and they go to collect the sand. 5 minutes inside, 1 week outside has passed and Nijin quickly goes out.
Finally, they go to get lava from the volcano planet and use it to melt the sand and turn it into glass. However, the entrance to the planet is sealed off and Nijin sneaks in by cutting into a square. He quickly runs to the top of the volcano and collects the lava.
The lava men noticed Nijin and bought an ice sword from a sword dealer before going to this planet. To be prepared in advance, because the swords will melt when attacking the lava men. Nijin takes out the ice sword from his inventory and quickly cuts off their heads, reaching the top of the volcano.
However, there is a dragon at the top. Nijin collects the lava without waking the dragon, and as he goes, the dragon notices and flies to Nijin. Nijin jumps at the dragon and just as he is about to cut it, the dragon breathes fire. Nijin cuts the flame and cuts off the dragon's eye and jumps in the air, decapitating the dragon. Thus, Nijin becomes lvl 100.
They set out for the last ingredient, and that ingredient is the absolute healing pill. Det asks for it for emergency and Nijin goes to the medical clan to get it and talks there. They say it is not for sale, but Nijin puts on a ninja outfit and sneaks in to steal it in the evening and quickly goes to where the pill is.
However, the safe is locked and an eye scan is required. Nijin knocks out an authorized person there and has his eyes scanned, and there is someone inside the safe. "Is this what you were looking for?" he says. "Yes, I was looking for him," says Nijin and cuts off the person's hand and takes the pills. Two are needed and Nijin throws his hand at that person and throws one pill. "It may be necessary," he says. That person puts his arm back on, takes the pill, and his arm heals.
Nijin goes to Det and finishes the exterior of the vehicle. Then, to make glass, he pours the lava into a mithril bucket and melts the sand into glass. It puts all the pieces into place and everything is complete.