Summoned from another world, the hero is Ultraman Zeta.

The wind was still strong, carrying the afternoon heat as it blew across the river, causing waves to surge and crash against the opposite bank. However, it was interrupted by a boat that suddenly attacked from the middle of the river. The captain led Yaohui and the others directly to the gathering place of the fish monsters, aiming to quickly eliminate any future troubles.

They continued straight through the fork in the road and entered the valley. The captain slowed the boat down and found a secluded spot to dock. They then walked on land, making quiet and stealthy steps, until they could clearly see the fish monsters moving ahead.

"Is that the monster Yu Ding? Why does it look like a weirdo?" Yao Hui felt very strange when he saw Yu Ding's true appearance. Compared to a monster, he felt that Yu Ding was more like an alien.

The Fish-Ding Monsters are similar in size to adult men, except that their heads are entirely fish heads, and their entire bodies are covered in bluish skin, as if they were sculpted from mud. A large group of Fish-Ding Monsters gathered on the riverbank, holding tools they had stolen from humans, as well as stone tools they had pieced together themselves in imitation of these tools, and they were all digging in the ground along the bank.

"What are they doing? Are a bunch of monsters trying to farm like humans?"

"This isn't farming; those fish monsters are diverting the water, trying to direct it further away."

Faced with Ajiu's doubts, the captain shared his previous research findings, opened a map, pointed out the area, and then marked the direction in which the fish monster was digging.

"The area they dig is the shortest distance from another river. I guess they do this to claim the other river as their territory, perhaps to expand their hunting range, or perhaps to relocate their territory. I don't know the specific reason."

"Then why do these fish monsters use human tools? That's so strange."

"It's possible that these fish monsters saw humans using tools to develop water conservancy projects in their previous territories, or perhaps humans used these tools to destroy their original territories, so they learned to use human tools to expand their own territory."

Sean still felt somewhat resistant to the fish monster, but after hearing the captain's conjecture, he did develop a slight curiosity about these humans who used human tools, though his main feeling was still aversion.

"The green mud on these fish monsters is a derivative substance; their fish heads are the main body. You can destroy them by attacking their heads. However, be careful, as the green mud can transform. We've seen examples of fish transforming into wild boars before, so be careful when fighting them."

After the captain finished giving his final warning, Haruki and Sean were ready for battle. Since their opponent was a monster the size of a human, they would fight it out in a life-size battle.

"Are you ready, Sean? We have a habit of shouting a slogan before a battle like this where we're from."

"What a coincidence, we have the same slogan there too. I wonder if ours is the same."

Fully prepared, Yaohui and Sean held the Courage Crystal and the Light Magic Stone in their hands and placed them together on their waists, ready to complete the charging of Ultra Light Energy.

"Transform." Yugi Junsei released halos of light that circled around him, releasing streams of light that flowed through Haruki's entire body. The crystal on his chest lit up, and a Z-shaped halo appeared in the air, quickly descending and covering Haruki. In an instant, he transformed into Zeta Primal.

"Armor Combination." The chip activated and the Light Magic Stone immediately shone, Ultraman skin appeared on Sean's body, then red and blue lights lit up simultaneously, accompanied by power enhancement, and silver armor flew over to complete the final Alpha Combination.

"Your lines sound a bit strange, Sean." "I feel like I've heard those lines somewhere before."

"Stop talking and get on with this!" Ajiu pushed Yaohui and Sean forward; this wasn't the time to discuss lines.

Yao Hui and Sean leaped down from the high hillside and landed on the ground. Yu Ding, who was responsible for patrolling the outer circle, was the first to notice the unusual commotion. Seven Yu Ding immediately surrounded the two of them.

"Balabra! Waaah!" Upon noticing a strange creature approaching, Yu Ding yelled without doing anything to confirm it, and was then kicked away by Yao Hui's aerial kick.

However, that action had already provoked the surrounding fish to become aggressive. Several fish that were close to Yaohui had already run up, swinging their claws and punches.

"Good timing, let the battle begin."

Reaching out to grab the fist that Fish Ding was throwing, Haruki transformed into Zeta Primal, his entire body brimming with power. He forcefully flung away the fish monster's fist, exposing its back, and then slashed down with his hand blade, shattering Fish Ding's muddy body. The fish head fell to the ground and bounced back and forth. Haruki then retracted his hand blade and assumed a fighting stance.

Three fish monsters attacked from three sides. One of the fish monsters kicked at Haruki, who dodged backward. The other two then threw punches and surrounded him.

Haruki first dodged to the side, then grabbed the arm of a fish monster and controlled it. He held the fish monster down and swung it around, making it crash head-on into the fish monster that was trying to attack. Finally, both of them fell to the ground and were blown apart by Zeta's energy head shuriken.

A fish-like monster suddenly attacked from behind, kicking and sweeping, causing Yao Hui to stumble. He patted the mud off his body and became more wary.

The fish monster launched another kick, and Haruki raised his leg to block. After blocking two rounds of kicks, the fish monster ran out of moves. Haruki spun around and kicked the fish monster to the ground. He then followed up, grabbed the riding position, and punched down, smashing Qingni and sending him flying.

Alpha's shot pierced through the body of a fish monster named Qingni first. Then, two fish monsters grabbed at Alpha Shawn at the same time. Alpha Shawn quickly attacked and punched and kicked one of the fish monsters, then kicked the other fish monster away.

After tempering his palms, AlphaShaun launched a quick counterattack with punches, powerfully destroying the mud of one of the fish monsters. Then, with a high kick, he sent the head of another fish monster flying into the water, and the remaining mud body dissipated on its own.

"Wow, everyone's amazing. Looks like I can finally take a break." Zeta's consciousness watched the battle unfold from within the Yugi Pure Crystal. To deal with this kind of life-size fight, Zeta gave control of his body to Haruki, and now it seems like that was a really good choice.

"It's a bit too early to be happy, Zeta." Haruki didn't share Zeta's excitement. Seeing more fish monsters running towards them in the distance, Haruki prepared for battle.

"La la woo! Hiss ra!"

A roar summoned all the fish monsters digging in the distance. A large group of fish monsters carrying shovels and pickaxes rushed towards Yaohui and Sean. The head of a fish monster whose body had been blown apart earlier hopped over and started babbling in its language. Upon hearing this, the other fish monsters around them all went berserk.

After Yu Ding finished speaking, another fish monster picked him up and fused him into Qingni's body. It then drew more soil from the ground to expand its size, and a large mud monster with two fish heads appeared before everyone's eyes. It then led the attack on Yao Hui and Sean once again.

The pickaxe tip slammed down, forcing Alpha Shawn to dodge. Then, several more pickaxe swings forced the fish-men to use their brute force. Alpha's rapid shot was launched again, destroying the pickaxe handle and the mud along with it. However, because Shawn was focused on shooting, the other fish-men came over and shoveled Shawn away, knocking him down.

Sean got up again, punched away the shovel that was slapped at him, and kicked the fish monster Qingni hard, shattering it. The other fish monsters surrounded him again. Sean tried to move away, but his legs got stuck in the mud. A fish head slid to Sean's feet and controlled the mud to trap him. The other fish monsters took this opportunity to swarm him.

With a swing of its heavy hammer, the giant fish monster sent mud flying everywhere. Holding stone hammers in both hands, it continued to chase after Haruki. Smaller fish monsters pursued at the same time, moving faster to surround Haruki and begin swinging their tools.

Raising his arm to block the shovel's strike, Haruki gripped the shovel, turned around, disarmed himself, and swung the shovel with both hands to send the approaching fish monster flying.

After eliminating the nearby threat, Haruki threw the shovel far away. The giant fish monster leaped and pounced, slamming its hammer into the ground. Haruki quickly rolled to avoid the impact and stared at the giant fish monster in the distance, thinking about a countermeasure.

After the stone hammer landed, it was followed by a launching attack, and a mud blast came suddenly, hitting Yaohui squarely and knocking him to the ground. The two heads of the giant fish monster began to laugh, and once again swung the giant hammer and strode towards the invaders of its territory.