Ep 9. Law of Onimon's Training

Ueki meets a new character named Onimon, the strongest fighter in the tournament. Onimon offers to train Ueki, but only if he can survive one minute against Onimon's own power. Ueki accepts the challenge and prepares to face Onimon.

The two begin to fight, and Ueki quickly realizes that Onimon's power is incredibly strong. He struggles to keep up, but manages to dodge most of Onimon's attacks. Eventually, Ueki figures out a way to counter Onimon's power and successfully lasts the full minute of the challenge.

Impressed with Ueki's fighting skills, Onimon decides to train him. He takes Ueki to an isolated island where he begins to teach him a new power: the power to turn sound into solid objects. Onimon explains that this power can be incredibly useful in battle, but only if used correctly.

Meanwhile, the rest of Ueki's team is worried about him. Kosuke and Ai discuss Ueki's training with each other, wondering why he hasn't returned yet. They also worry about Ueki's safety, as they know that the tournament is getting more dangerous with each passing day.

Back on the island, Ueki continues to train with Onimon. He struggles to control his new power at first, but eventually learns how to use it to create useful objects. Onimon also teaches Ueki a new technique that can create a powerful sound wave, which he can use to defeat enemies.

As Ueki's training continues, his friends continue to worry about him. They decide to go look for him, but they soon realize that finding an isolated island is no easy task. They search for days, but eventually give up and return to their own training.

Meanwhile, Ueki continues to train with Onimon, getting stronger by the day. He also learns more about Onimon's past, including why he is participating in the tournament. Onimon reveals that he is doing it to protect his homeland, which was destroyed by a powerful enemy.

As Ueki's training nears its end, Onimon tells him that he has one final challenge for him. Ueki must use his new power and technique to defeat Onimon in a battle. Ueki is hesitant at first, but eventually agrees to the challenge.

The two begin to fight, and Ueki uses his new power and technique to its full potential. The battle is intense, and both fighters are evenly matched. However, Ueki manages to land a decisive blow on Onimon, defeating him in the process.

Onimon congratulates Ueki on his victory, telling him that he has become a formidable fighter. He also warns Ueki about the dangers of the upcoming battles, telling him to be careful. Ueki thanks Onimon for everything he has done for him and promises to use his new powers wisely.

As Ueki prepares to leave the island, he is surprised to see his friends waiting for him. They tell him that they were worried about him and wanted to make sure he was okay. Ueki thanks them for their concern, telling them that he is ready for whatever comes his way.

The episode ends with Ueki and his friends returning to the tournament, ready to face whatever challenges lie ahead.