Devil Fruit: Invincible from the Tremor-Tremor Fruit

Kaido, in the form of a dragon man, stood on the battlefield like a god of war who controls life and death. He tightly grasped the huge mace in his hand. The shaft of the mace was engraved with ancient runes and flashed with mysterious light.

Suddenly, Kaido took a deep breath, and the strength of his whole body seemed to be concentrated at this moment. He swung the mace violently and blasted it towards Shield Mountain with incredible speed and power. This blow was his unique skill - "Earth-shattering Star"!

The mace drew a brilliant trajectory in the air, like a meteor falling to the ground, carrying the power of destroying the world. The air around the shaft seemed to be torn apart by this force, making a deafening roar.

Seeing this, Shield Mountain's pupils suddenly shrank, and he felt an unprecedented sense of crisis. However, as a battle-hardened warrior, he did not retreat, but gritted his teeth and tried his best to block the shield in front of him.

"Boom!"

A loud and earth-shattering sound came, and Kaido's mace hit Shield Mountain's shield heavily. This force was like a landslide, making the surrounding ground tremble.

Shield Mountain felt as if he was hit by a mountain, his arms were numb instantly, and his body was struck by lightning. He tried to stay standing, but the huge impact made him unable to resist.

Finally, in the face of this unparalleled force, Shield Mountain's shield completely collapsed, turning into countless fragments and splashing out. And Shield Mountain himself, under the impact of this force, fell heavily to the ground and fainted.

Kaido put away his mace, looked at Shield Mountain lying on the ground, and a trace of indifference flashed in his eyes.

The army of fishmen surged like a tide, waving their sharp fins, opening their big mouths full of fangs, and making creepy roars. These fishmen are agile, powerful, and numerous, like an unstoppable torrent, rushing to every corner of the Blue City.

The human warriors in the Blue City rose up to resist, waving their weapons and fighting desperately with the fishmen. However, the number of the fishmen army is too large, they seem endless, and they keep pouring in from all directions. Although the human warriors are brave, they are gradually unable to cope with such a siege.

The battle became more and more tragic, and the blood of human warriors dyed the earth red. Their bodies lay on the ground in all directions, and some warriors kept fighting until their death, as if showing the world their indomitable and bravery. The fishmen army trampled on these bodies mercilessly and continued to charge forward.

In the Blue City, there were sounds of fighting everywhere, blood and death everywhere. The city seemed to have turned into a purgatory on earth, with blood flowing like a river, which was horrible to watch.

The deputy city lord of Blue City stood on the high city wall, looking solemnly at the tragic battlefield ahead. The fish army was like a raging flood, ruthlessly devouring the lives of Blue City warriors. His heart was full of anxiety and helplessness, knowing that with the existing strength of Blue City alone, it was impossible to resist this powerful fish offensive.

He looked up at the sky, where a huge aerial fortress, the Eye of the Sky, was suspended. This fortress has powerful combat power and high-tech weapons, and is the last hope of Blue City. The deputy city lord took a deep breath and sent an urgent request to the minister of the Eye of the Sky through a special communication device.

"Minister, the fish army has broken through our defense line, and Blue City is in danger. I ask you to take action immediately and help us repel this enemy!" The tone of the deputy city lord was full of urgency and pleading.

However, the minister of the Eye of the Sky did not respond immediately. He stood in the command room of the fortress, looking deeply at the battlefield below. His heart was also full of worries, but he also understood that the power of the Eye of the Sky was not unlimited, and every move needed to be carefully considered.