Chapter 519: After the encounter with the hidden treasure in the fog, the battle to break the conspi

Chopper transforms into a giant form and hits the pirate ship with his body. Robin uses the power of the Hana-Hana no Mi to grow arms on the pirate ship and destroy the ship's structure. Franky uses laser beams to attack the vital parts of the pirate ship, and Brook uses the sound of the soul to interfere with the actions of the pirates.

With the joint efforts of everyone, the pirates were completely repelled. The ninjas were grateful to Luffy and others. They handed the ninjutsu crystal to Luffy and others for safekeeping, and told them that there was a bigger secret waiting for them to explore in the depths of the island.

Luffy and his companions said goodbye to the ninjas and headed towards the depths of the island. They passed through a dense forest and came to a huge canyon. The canyon was filled with a mysterious atmosphere, and there was a huge hot spring at the bottom of the valley. The water in the hot spring was a strange color and was constantly steaming.

"This hot spring looks extraordinary, maybe it has some special effects." Chopper said. Luffy jumped into the hot spring excitedly: "Wow, it feels so good!" The other friends followed suit and entered the hot spring.

However, soon after they entered the hot spring, they found that some strange changes began to occur in their bodies. Luffy's rubber body became softer and more elastic, Zoro felt that his strength and speed had been improved, Sanji's Devil Wind Leg flame became more vigorous, Nami was able to better control the weather stick, Usopp's invention inspiration continued, Chopper's transformation ability became more powerful, Robin's Hana-Hana-no-fruit ability range expanded, Franky's body functions were optimized, and Brook's soul sound became more contagious.

"This hot spring can actually enhance our abilities, great!" Luffy shouted excitedly. Just as they were enjoying the benefits of the hot spring, a powerful energy wave suddenly surged from the bottom of the hot spring. A huge hot spring monster emerged from the bottom, its body made of hot water and rocks, and its eyes flashed with fiery light.

"Another monster, but we are not afraid of you now!" Luffy said confidently. He stretched out his rubber arm and attacked the monster: "Rubber? Flame Gun!" His arm burned with flames and hit the monster's body hard.

Zoro, Sanji and the others also displayed their special skills. Zoro's sword flashed across the monster, splashing hot water: "Three Swords Style? Purgatory Demon Slash!" Sanji's flaming kick melted part of the monster's body: "Devil Wind Kick? Deep-fried Big Platter!"

Nami used the weather stick to summon lightning and struck the monster: "Thunderbird!" Usopp took out a specially made "Hot Spring Monster Dissolving Bomb" and fired it at the monster. The bomb exploded inside the monster, causing it to roar in pain.

Chopper transforms into a special form and attacks the monster with his body power. Robin uses the power of the Hana-Hana no Mi to set up obstacles around the monster to restrict its movements. Franky uses laser beams to attack the monster's vital parts, and Brook uses the sound of the soul to interfere with the monster's thinking.

In the fierce battle, they found that the monster's weakness was a red crystal on its chest. As long as the crystal was destroyed, the monster could be defeated.

Luffy and the others began to focus their attacks on the crystal on the monster's chest. Luffy used his rubber arm to launch himself into the monster's chest, and then punched the crystal with all his strength: "Rubber? Great Ape King Spear? Crystal Breaker!" This punch hit the crystal hard with great force.

The crystal shattered instantly, the monster let out a huge scream, and then turned into a pool of hot water and dissipated in the hot spring. As the monster disappeared, the energy fluctuations of the hot spring gradually subsided.

Luffy and his companions came out of the hot springs, feeling that their abilities had been permanently enhanced. They continued to explore the island and found a treasure hidden in a cave. There were a lot of gold, silver, jewelry and precious artifacts in the treasure, but Luffy and his companions were not tempted by the wealth. They only picked up some items that would help them in their adventure and left the treasure cave.

After leaving the Kirigakure Island, they continued to sail on the sea. After sailing for a while, they came to an island full of joy. The island was full of laughter and people were singing and dancing, as if they were celebrating some festival.

"Wow, it looks so lively here!" Luffy said excitedly. They landed on the island and were infected by the joyful atmosphere on the island. However, they soon discovered that there seemed to be some unknown secrets hidden behind the joy of this island.

In communicating with the residents on the island, they learned that the island was ruled by an evil circus leader, who used various means to control the minds of the residents, making them immersed in false joy and seeking benefits for himself.

Luffy and his friends decided to expose the leader's conspiracy and save the island residents. They came to the circus and saw the leader performing various magic tricks and acrobatics on the stage, and the audience was fascinated.

"You bad guy, stop deceiving us!" Luffy shouted. The leader sneered: "You outsiders, don't meddle in other people's business. Otherwise, you will regret it!"

As he spoke, the leader cast a spell and summoned a group of circus monsters. These monsters had different shapes, some with huge teeth, and some with sharp claws. They pounced towards Luffy and the others.

Luffy used his rubber arms to attack the monsters: "Rubber? Machine gun? Wild dance!" He waved his arms quickly in the air, and the monsters dodged, but many were still hit and flew away.

Zoro, Sanji and others also used their special skills to fight the monsters. Zoro's sword flashed among the monsters: "Three Swords Style? Tornado!" Sanji's fire kicks burned parts of the monsters' bodies: "Devil Wind Kick? Sanji Shooting!"

Nami used the weather stick to summon wind and rain to disrupt the monsters' actions: "Storm!" Usopp took out various special ammunition and fired at the monsters: "Fireworks Star Bombs!" The bombs exploded in the group of monsters, blooming brilliant fireworks and temporarily blocking their offensive.

Chopper transformed into a giant form and slammed his body into the monsters: "Chopper Charge!" His huge body was like a heavy truck, knocking down the monsters one after another.

Robin used the power of the Hana-Hana Nomi to grow arms under the monsters' feet and trip them: "Large Delphinium!" Countless arms stretched out from the ground, grabbed the monsters' ankles, and made them unable to move.

Franky used laser beams to attack the monsters' vital parts, while Brook used the sound of the soul to interfere with the monsters' thinking, making their attacks slow and chaotic.

In the fierce battle, they found that these monsters had a special reaction to music. So, Brook increased the intensity of the soul sound, and under the influence of the music, the monsters gradually lost their will to fight and began to flee everywhere.

Seeing that the situation was not good, the leader took action himself. He used powerful magic to transform himself into a huge demon. The demon leader held a huge magic wand and attacked Luffy and others.