Chapter 513: The mysterious ship in the foggy sea breaks the black robe, the purple sea monster figh

Just as everyone was watching their surroundings vigilantly, a melodious song came from the thick fog. The song was ethereal and graceful, but it had an indescribable bewitching power that gradually blurred people's consciousness.

"Oh no, there's something wrong with this song, don't be fooled!" Usopp shouted while covering his ears. However, some crew members couldn't resist the temptation of the song, their eyes became blurred, and their steps walked uncontrollably into the depths of the fog.

Seeing this, Luffy immediately used his rubber arms to pull back the confused crew members: "Cheer up!" He shouted loudly, trying to wake them up. Zoro drew his sword vigilantly and stared at the thick fog: "There must be someone hiding in this thick fog, trying to lure us into a trap."

In order to fight against this strange singing voice, Brook stepped forward, put the violin on his shoulder, and played the sound of his soul. Brook's music and the mysterious singing voice intertwined and collided in the thick fog, forming a wonderful resonance. Under the influence of this soul sound, the confused crew gradually regained consciousness.

As the fog gradually dissipated, they saw a huge sailing ship appearing in front of them. The sailing ship was ancient and gorgeous, with various mysterious patterns painted on the sails, but the whole ship exuded a gloomy atmosphere.

"What kind of ship is this? It doesn't look like an ordinary ship." Nami frowned and said. Before they could investigate carefully, countless black arrows suddenly shot out from the sailboat and attacked the Thousand Sunny.

"Defense!" Luffy yelled, and took the lead in swinging his rubber arms, knocking down the approaching arrows. Zoro, Sanji and others also acted quickly. Zoro swung three swords, and the arrows were cut into pieces in the flash of the swords: "Three Swords Style? Demon Slash!" Sanji moved flexibly in the air with Moon Steps, and kicked out his legs like lightning, kicking the arrows away: "Demon Wind Kick? The finishing touch!"

Chopper transformed into a combat form, using his antlers and body to shield the ship from arrows. Robin used the power of the Hana-Hana no Mi to grow countless arms around the ship, catching and breaking the arrows one by one. Franky activated the ship's defense device, firing laser beams to destroy a large number of arrows. Brook continued to use the Soul Sound to disrupt the enemy's attack rhythm.

After successfully resisting the rain of arrows, Luffy and his friends decided to board the mysterious sailboat to find out what was going on. They took a small boat to approach the sailboat and then climbed up along the rope.

After boarding the sailboat, they found that the ship was filled with a foul smell and the deck was covered with some strange symbols and dried blood.

"This place is so gloomy, it feels like some evil ceremony has been held here." Robin said softly, her eyes searching for clues. Suddenly, a group of people in black robes emerged from the cabin, wearing strange masks on their faces, revealing only pairs of eyes flashing red.

"You outsiders, you dare to break into our territory, you will all become sacrifices to darkness!" One of the black-robed men made a low and hoarse voice. Luffy responded fearlessly: "We are not afraid of you, whatever conspiracy you have, just use it!"

The black-robed people raised their staffs and chanted something. In an instant, the sea around the sailboat began to roll violently, and huge black tentacles stretched out from the sea water and wrapped around Luffy and the others.

Luffy stretched out his rubber arms and started fighting with the tentacles: "Rubber? Big snake cannon!" His arms were as flexible as a python, and he kept attacking the tentacles. Zoro, Sanji and others also used their own special skills. Zoro's sword light passed through the tentacles, leaving deep scars: "Three swords style? Secret? One? Three thousand? The world!" Sanji's fire kick burned the surface of the tentacles: "Devil Wind Kick? Hell Flame!"

Nami summoned lightning with the weather stick and struck the tentacles. Usopp took out the newly invented "tentacle cutting bomb" and fired it at the tentacles. The bomb exploded and cut off the tentacles. Chopper transformed into a huge form and suppressed the tentacles with his body. Robin used the power of the Hana-Hana no Mi to grow more arms on the tentacles and pulled them against each other. Franky attacked the roots of the tentacles with laser beams, and Brook used the voice of the soul to try to interfere with the magic control of the black robe man.

In the fierce battle, they found that these black-robed men controlled the tentacles through a huge magic circle in the center of the sailboat. As long as this magic circle was destroyed, the tentacles' attack could be stopped.

Luffy and the others quickly rushed towards the magic circle. Seeing this, the black-robed people gathered around and tried to block their way. A fierce close combat began. Luffy relied on the flexibility of his rubber body to shuttle freely among the black-robed people and constantly attacked them with his fists: "Rubber? Machine gun!" Zoro's three swords swung among the black-robed people, and each sword carried a powerful force: "Three Swords Style? Iai? Shishigege!" Sanji's leg skills were as sharp as the wind, kicking away the approaching black-robed people one by one: "Devil Wind Kick? Devil Dance!"

Nami and Usopp coordinated the attack. Nami used the weather stick to create various weather phenomena to interfere with the black-robed men, while Usopp used various special ammunitions he invented to attack their weaknesses. Chopper, Robin, Franky, and Brook also used their own abilities to create conditions for Luffy and others to charge.

After a hard fight, they finally broke through the black-robed man's defense and arrived in front of the magic circle. Luffy used his strongest rubber attack without hesitation: "Rubber? Great Ape King Spear? Demon Crusher!" This punch hit the magic circle hard, and the magic circle shattered instantly, emitting a dazzling light.

As the magic circle was broken, the huge black tentacles sank to the bottom of the sea. The black-robed people saw that the situation was hopeless, roared angrily, and jumped into the sea to escape.

Luffy and his companions continued to explore the sailboat. They came to the bottom of the cabin and found a huge secret room. The door of the secret room was closed, and it was engraved with various mysterious runes and patterns.

Robin studied the runes on the door carefully and said, "These runes record an ancient secret that seems to be related to a powerful treasure. But to open this door, you need to solve a complex puzzle."

Everyone started to think and discuss about the puzzle. Usopp, with his rich imagination and knowledge of various traps, proposed some possible ideas. After some efforts, they finally found the answer to the puzzle.

When they followed the answers, the door of the secret room slowly opened. There was a dazzling light inside. Everyone walked into the secret room and saw a huge treasure chest. The treasure chest was inlaid with various precious gems, emitting charming brilliance.

Luffy ran over excitedly and opened the treasure chest. However, the treasure chest did not contain the gold and silver treasures they imagined, but an ancient book. The paper of this book has turned yellow, and it is full of dense words and various strange patterns.

Robin picked up the book and read it carefully. Her expression gradually became serious: "This book records an extremely dangerous magical power. If it is obtained and used by evil people, it will bring great disaster to the whole world. We must keep it properly."

Luffy and his companions knew the seriousness of the matter, so they decided to leave the ship with the book and continue sailing. After leaving the ship, they put the book in a safe place and set up many protective measures.

As they continued to move forward, they encountered another mysterious sea area. The water in this sea area was a strange purple color, and some fluorescent algae were floating on the sea surface.

When their ship entered this sea area, they found that the speed of the ship gradually slowed down, as if being dragged by an invisible force. In addition, the crew began to feel an inexplicable drowsiness and fatigue.

"What's going on? There must be something wrong with this sea area." Franky said as he checked the ship. Suddenly, huge purple bubbles emerged from the sea water and tightly wrapped the ship.

Luffy tried to break the bubble with his rubber arm, but the bubble was very tough and his attack could only leave some shallow marks on the bubble. Zoro slashed at the bubble with a knife, but he also couldn't break it.

Just when everyone was in trouble, Chopper discovered that the bubbles seemed to react to some kind of medicine. He prepared a special potion based on his medical knowledge. After sprinkling the potion on the bubbles, the bubbles began to burst gradually.

They successfully got rid of the bubble, but before they could breathe a sigh of relief, a huge purple sea beast jumped out of the sea. The sea beast's body was huge, covered with hard scales, and its eyes flashed with fierce light.

"Another big guy, but we won't back down!" Luffy shouted. He stretched out his rubber arms and rushed towards the sea monster: "Rubber? Bazooka!" His attack hit the sea monster's head hard, but the sea monster just shook its head and was not seriously hurt.

Zoro, Sanji and the others also displayed their special skills. Zoro's sword flashed across the scales of the sea beast, splashing a string of sparks: "Three Swords Style? Tiger Hunt!" Sanji's fire kick slightly charred the surface of the sea beast's body: "Devil Wind Kick? Mutton SHOT!"

Nami summoned lightning with the weather stick and struck the sea beast. Usopp took out a special "sea beast penetrating bomb" and fired it at the sea beast. The bomb exploded on the sea beast's body, creating some small holes. Chopper transformed into a giant form and hit the sea beast with his body. Robin used the power of the Hana-Hana Fruit to set up obstacles around the sea beast to restrict its movements. Franky attacked the sea beast's eyes with laser beams, and Brook used the sound of the soul to interfere with the sea beast's nerves.

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 continue to sail on the sea. They know that the future adventure is still full of countless unknowns and challenges. But they firmly believe that as long as everyone is united, nothing can stop them from pursuing their dreams. Whether it is a mysterious island, a strange sailboat, or a dangerous sea area and powerful sea beasts, they will all become wonderful chapters in their adventure, and they will also write their own legendary stories on this great route.