One Piece: The Straw Hat Pirates' Max-Level Swordsman

During the fierce battle, they found a relatively weak spot in the belly of the sea monster. Luffy seized the opportunity and used his rubber arm to catapult himself into the belly of the sea monster, then punched the weak area with all his strength: "Rubber? Great Ape King Spear? Armor Break!" This punch sank deeply into the belly of the sea monster, and the sea monster let out a painful roar, and blood gushed out from the wound.

The other companions also took the opportunity to launch a more fierce attack. With everyone's concerted efforts, the sea monster was finally defeated and sank to the bottom of the sea.

Luffy and his companions continued to explore the island, and they found an old logbook in the basement of the observatory, which recorded some secrets of the sea area and clues to a legendary treasure.

"Treasure? Sounds interesting, let's go find it!" Luffy said with shining eyes. According to the clues in the logbook, they set out on a journey to find the treasure. In the process of searching for the treasure, they encountered some other challenges, such as traps hidden in the cave, mysterious creatures guarding the treasure, etc., but they overcame these difficulties one by one with unity and wisdom.

Finally, they found the legendary treasure, which turned out to be a group of precious ancient artifacts and some mysterious items that could enhance their strength. Luffy and others did not monopolize these treasures, but decided to hand them over to the right people or institutions so that these treasures could play a greater role.

After Luffy and his crew properly handled the treasure, they set sail again. During the voyage, they encountered a rare storm. The wind was howling, the waves were surging, and the Thousand Sunny was shaking violently in the waves.

"Everyone, stay calm, don't be scared by this storm!" Luffy grabbed the side of the boat tightly and shouted loudly. Franky tried his best to control the boat and keep it balanced. Zoro, Sanji and others fixed ropes everywhere on the boat to prevent items from being blown off.

Nami was on the observation deck, trying to observe the changes in the weather and trying to find the pattern of the storm. Suddenly, she found a huge vortex in the sky, which was constantly absorbing the surrounding clouds and rain, forming a strong suction force.

"Oh no, there's something wrong with the whirlpool, we have to get out of here!" Nami shouted anxiously. Luffy immediately stretched out his rubber arms and adjusted the sail to the best angle, trying to use the wind to escape from the whirlpool.

However, the suction of the vortex was too strong, and the ship was gradually pulled closer to the center of the vortex. Just when everyone was feeling desperate, Chopper discovered some strange creatures on the sea. These creatures looked like dolphins, but their bodies emitted strange light. They swam around the ship, as if conveying some kind of message.

"These creatures seem to be helping us, they want us to follow them!" Chopper shouted. Luffy decided to trust these creatures without hesitation, and he directed Franky to the direction where the creatures were swimming.

Under the guidance of these mysterious creatures, they finally managed to escape from the dangerous area of ​​storms and whirlpools. The ship slowly sailed to a calm sea, and those creatures disappeared into the sea after bringing them to a safe area.

"Phew, that was a close call! Thanks to those mysterious guys." Usopp wiped the sweat from his forehead and said. Luffy smiled and said, "It seems that there are many friends in this sea that we don't know about!"

They continued sailing, and soon they came to an island covered by thick fog. The island was filled with a mysterious atmosphere, making people feel as if they were in a fairyland.

"This place looks very mysterious, there must be a lot of fun things!" Luffy said excitedly. They boarded the island and found that the plants on the island were very strange. Some plants would emit soft light, and some plants' leaves would automatically flutter like fans.

Following a winding path, they came to a huge lake. The water in the lake was crystal clear, but there was no sign of any living creatures at the bottom of the lake. Just as they were wondering, a huge column of water suddenly surged up from the center of the lake, and a beautiful woman appeared in the water column.

"Who are you? Why are you trespassing in my territory?" the woman asked softly. Luffy smiled and replied, "We are the Straw Hat Pirates. We saw this island while sailing on the sea and wanted to come and take a look."

The woman frowned slightly: "This island is my home, outsiders are not welcome. You'd better leave immediately." Luffy was not scared by her words, he said: "We just want to stay here for a short time, we won't destroy anything here."

The woman pondered for a moment, then said, "Okay, you can stay here for a while, but don't go near the palace in the center of the lake."

After Luffy and the others thanked the woman, they began to explore the island. They found many ancient ruins on the island, which were engraved with various mysterious symbols and patterns. Robin became very interested in these ruins and began to study them carefully.

During the exploration, they accidentally triggered a mechanism. After the mechanism was activated, a group of stone guards emerged from the ground. These guards armed with weapons attacked Luffy and others.

Luffy quickly stretched out his rubber arms and started fighting with the stone guards: "Rubber? Whip!" His arms were as flexible as whips, and he kept attacking the stone guards. Zoro wielded three swords, and the sword lights flashed across the stone guards: "Three Swords Style? Demon Slash!" The stone guards were slashed with cracks, but they continued to attack.

Sanji moved flexibly in the air with the Moon Step, and kicked out a flaming kick with his legs: "Devil Wind Kick? The finishing touch!" The flames burned on the stone guards, but they didn't seem to care. Nami used the weather stick to summon lightning, which struck the stone guards. After being hit by the lightning, the stone guards paused for a moment.

Usopp took out a special "Statue Destroying Bomb" and fired it at the statue guards. The bomb exploded on the statue guards, leaving some gaps in their bodies. Chopper transformed into a giant form and hit the statue guards with his body. Robin used the power of the Hana-Hana Fruit to grow arms around the statue guards and hold them tightly. Franky used laser beams to attack the vital parts of the statue guards, and Brook used the Soul Voice to interfere with the actions of the statue guards.

In the fierce battle, they found that the weakness of the stone guards was a blue gem on their heads. As long as the gem was destroyed, the stone guards could be defeated.

Luffy and the others began to focus on attacking the gem on the head of the stone statue guard. Luffy used his rubber arm to launch himself onto the head of the stone statue guard, and then punched the gem with all his strength: "Rubber? Great Ape King Spear? Treasure Breaker!" This punch hit the gem with great force. The gem shattered instantly, and the stone statue guard made a dull sound, and then turned into a pile of stones and scattered on the ground.

With the stone statue guard defeated, the mechanism stopped working. They continued to explore the island and unknowingly came to the palace in the center of the lake.