After feeling a very strong aura, Nijin, Det, Yue and Yone realized that it was clear where to go. When they arrived at the planet they entered, they realized that they were in the middle of a great war. A fierce conflict was taking place between the wizard king and the monsters. The group began heading down to defeat the monsters and level them up.
Using his flawless sword technique, Nijin defeated all of the monsters within seconds. He quickly leveled up and reached level 2500. They moved deeper into where the monsters lived. Once inside, they encountered monsters, but managed to use an old castle as a lair. They went in, quickly cleared the monsters, and moved towards where the leader of the monsters was.
The leader of the monsters took his sword and challenged them. Nijin approached the leader beast and introduced himself and asked, "Do you know who I am?" asked. The head of their monster was surprised and said, "Or is it the king ant?" He started making jokes. Nijin started laughing, then quickly moved and attacked the leader monster. First, the leader beast started to get scared and said, "I am the strongest boss of the universe." Finally, Nijin killed the leader monster by decapitating it. However, the leader beast's fearful face still remained unchanged.
After killing the leader of the beast, a ronin entered from another world. Ronin asked where the leader of the beast was and Nijin asked him if he meant the leader of the beast over there. Ronin said in surprise, "You beat it?" asked. "Yes, I beat it. It was very easy," Nijin said with a laugh.
Ronin asked Nijin if he wanted to join. However, Ronin said that if he could defeat Nijin, he would become Nijin's master. The duel began outside. Ronin devoted his whole life to the sword and used it better than Nijin. His sword was also a special sword, the "Unknown Blade", a sword that could cut anything and not be harmed. Ronin was called the "Sword Slayer".
Nijin pulled out his sword and Ronin involuntarily took a defensive stance. Ronin said wondering what was in the sword. "This sword is the Unknown Blade, the strongest sword in the universe. It cannot be broken, cut or damaged in any way," Nijin said. Ronin was surprised and began to use the special sword techniques he had hidden until now. Nijin started to struggle a bit, but he noticed an opening and attacked. While Ronin barely escaped, he continued the attack, accelerating his movements.
The duel continued at the same pace for hours. Tired and out of breath, Ronin turned to Nijin and said, "You are the strongest person I have ever seen." Nijin replied with a smile, "I'm the strongest person you'll ever see." Using all his speed, Nijin got behind Ronin and hit him. Ronin collapsed and his sword sank into the ground. "I won," said Nijin, holding his sword to Ronin's throat.
Deciding to become friends, Nijin and Ronin noticed a soldier coming to the castle. When the soldier asked what happened, Ronin said, "My master cut off the head of the beast." When they approached the king, Ronin said his name and introduced himself. While everyone collapsed under the king's influence, Nijin was the only one who did not collapse. Nijin laughed and said, "I am the strongest boss in the universe. Am I going to kneel down for you?" said.
The king said that he did not understand how Nijin won, and even when he heard that Nijin had slit the monster's throat, he did not believe it. The King makes eye contact with Usatsu, the strongest swordsman in the room, while still looking at Nijin with a suspicious expression. They suddenly come to an agreement and the king announces that he wants him to duel Usatsu. Once the duel begins, Usatsu gains the upper hand within seconds with his blazing speed and excellent technique and emerges victorious. The King and the others fall to the ground in astonishment as they watch this astonishing spectacle.
Taking advantage of Nijin's approach, the King says in a shaky voice, "Nijin, forgive me. I made a mistake." Silence prevails for a moment, then Nijin replies with determination, "I forgive, King. But I would like another opportunity to apologize. If you can use the destructive weapon of the former boss of the universe, take it."
The King, curiously waiting for Nijin's question, said, "Well, where is this weapon?" he asks. The King's eyes drop for a moment and then he answers with determination, "I hid that weapon in a place where only those who deserve it can get it so that no one can take it. It is the most dangerous and monster-filled place in the universe. Many people left, but none of them could return. But "It's not impossible with your power, only you can get it because you are the most powerful boss in the universe," he says.
Nijin asks curiously, "So, how did he get his hands on this gun?" The king thinks for a moment and then begins to tell his story. "On this planet, the first boss of the universe was born and became stronger over time and became the boss of the universe. However, he grew old and could no longer use it. I entrusted that weapon to my closest friend, the leader of a kingdom before me. That sword has been searching for its owner for centuries. Here is the map," said the King. He hands a map to Nijin.
Nijin excitedly takes the map and looks at the King with determination. "Det yue yone," he says, and they set off on a new journey together.