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

"There may be some secrets in this." Luffy said. So they began to explore the underwater cave. In the cave, they found some ancient devices that seemed to be used to control energy.

After some research, they found that these devices can be used to calm the energy storm outside. However, it takes a huge amount of energy to activate these devices, and the operation process is very complicated.

Luffy and his friends did not back down, they decided to try to activate these devices. In this process, each partner played his role. Luffy used his rubber ability to power the device, Zoro, Sanji and others protected the device and the partners who operated it, and Nami, Usopp and others assisted Lingtian and Robin to complete the complex operation.

After everyone's joint efforts, the device was finally activated, and the energy storm gradually subsided. The creatures in this mysterious sea were very grateful to Luffy and others, and they held a grand celebration for them.

After the celebration, Luffy and his friends continued to sail in the mysterious sea with full of joy and a sense of accomplishment. The wonders of this sea area still attracted them, and every new scene was like a mysterious picture waiting to be unveiled.

They sailed to a sea area where the water showed a strange fluorescent color, as if stars had fallen into the sea. In this fluorescent sea, they found a huge and ancient shipwreck. Most of the hull had been eroded by the sea, but its former grandeur could still be seen. Luffy shouted excitedly: "Let's go up and take a look, maybe there will be something interesting."

When they boarded the sunken ship, an ancient and mysterious atmosphere hit them. The cabin was filled with various mysterious symbols and ancient navigation instruments. Robin carefully observed these symbols and tried to interpret the information in them: "These symbols are somewhat similar to what we saw in the ruins before, and they seem to be telling a story."

Usopp found a strange box in the corner with a complicated lock on it: "Hey, everyone come and have a look, this box doesn't look simple." Franky walked over and became very interested in the lock of the box: "The design of this lock is very unique, let me see if I can open it." After some fiddling, Franky successfully opened the box, revealing a crystal ball emitting a soft light.

As they were curiously observing the crystal ball, suddenly, the entire shipwreck began to shake violently. A low roar came from the depths of the shipwreck, as if some huge monster had been awakened. Luffy looked around vigilantly: "It seems that someone doesn't welcome us."

A giant octopus monster emerged from the shadow of the sunken ship. Its tentacles were covered with sharp suction cups, and every swing left deep marks on the hull. Zoro quickly drew his sword: "Three Swords Style? Demon Slash!" His sword flashed like lightning and slashed at the tentacles of the octopus monster, but the octopus monster's skin was extremely tough, and only a shallow wound was cut.

Sanji also launched an attack, his Devil's Wind Kick leaving a trail of flames in the air: "Devil's Wind Kick? Mutton SHOT!" His attack successfully hit the octopus monster's head, but the octopus monster was only stunned for a short time, and then attacked more angrily.

Seeing this, Luffy stretched out his rubber arms and rushed towards the octopus monster like a cannonball: "Rubber? Bazooka!" His attack hit the octopus monster hard, pushing it back a little. Chopper transformed into a huge form and entangled with the tentacles of the octopus monster, giving his friends a chance to attack. Brook used the sound of the soul to interfere with the octopus monster's actions. His music echoed in the sunken ship, making the octopus monster a little irritable.

With everyone's joint efforts, they gradually found the octopus monster's weakness, which was a soft area around its eyes. Luffy seized the opportunity and launched another attack: "Rubber Giant Spear!" His fist hit the octopus monster's weakness accurately. The octopus monster screamed and then dived into the sea to escape.

"Humph, you want to run? That's not that easy!" Luffy wanted to chase after him, but was stopped by Ling Tian: "Don't chase him, this octopus monster may just be a creature guarding this place. We have more important things to do."

They continued to explore the shipwreck and found more clues about this mysterious sea and ancient civilization. From some old logbooks, they learned that this fluorescent sea was once an important waterway for ancient civilization, and this shipwreck was a merchant ship carrying precious cargo.

After leaving the shipwreck, they sailed towards the depths of the sea. Soon, they saw a maze of huge coral reefs. These coral reefs were colorful and varied in shape, but they hid great dangers.

"This coral reef maze looks difficult to navigate." Nami said as she looked at the complicated maze. Luffy smiled nonchalantly, "It's okay, we can just walk through it." They entered the maze carefully, and Franky controlled the boat, trying to avoid the sharp coral reefs.

However, there seemed to be a mysterious force in the maze that was interfering with their sense of direction. They walked for a long time, but always found themselves back to where they were. Usopp was a little anxious: "We won't be trapped here forever, right?" Robin said calmly: "There must be some mark or mechanism here that can help us find the exit."

So, everyone began to carefully observe the surrounding coral reefs. Chopper discovered that some coral reefs had special lines, which seemed to point to a certain direction. They sailed along the direction of the lines and found some new clues. In a huge coral reef cave, they found an ancient stone tablet with words and patterns engraved on it.

After Robin's interpretation, they learned that to leave the coral reef maze, they needed to adjust the navigation direction at a specific time point according to the different colors of coral reefs. Following the instructions on the stone tablet, they began their difficult attempts. After several failures, they finally succeeded in getting out of the coral reef maze.

After leaving the maze, they came to a new sea area. There were countless islands floating in the sky, and huge waterfalls connected the islands. The water of these waterfalls was turbulent, pouring down from a high place, making a deafening roar.

"Wow, those waterfalls are so spectacular!" Luffy looked at the waterfalls in the sky excitedly. They decided to land on one of the floating islands. Using Luffy's rubber ability and Zoro and Sanji's high skills, they successfully landed on an island.

The island has dense forests and strange creatures. The trees in the forest are towering into the sky, and the branches are full of huge fruits. Some of these fruits are as big as houses, and some emit strange light. While exploring the forest, they encountered a bird-like creature with huge wings and sharp claws. They regarded Luffy and others as invaders and attacked them.