Belial, Tregear, new members of the Straw Hat Pirates

"Tregear," Robin said, putting her hand on Tregear's shoulder. "Don't be sad, it's all in the past."

Hearing Robin's words, Tregear took a deep breath and, suppressing his emotions, said, "I'm sorry, I lost my composure."

"What's next?"

"Having been consumed by chaos, I began to overturn the justice of some aliens and Ultraman. I want to prove that chaos is everything."

"Later on, I gradually became an enemy of the Land of Light and the universe."

"I have also fought against Ultraman Geed, the son of Belial, as well as the new generation of Ultramen, led by Ultraman Ginga."

"You fought against Ultraman Geed?"

"Yes. Later, my main target for subversion became Ultraman Taiga, the son of Ultraman Taro."

"Surrender, Tregear," Ultraman Ginga said.

"You have nowhere to retreat!" Led by Ultraman Ginga, the new generation of Ultramen chased after Tregear to a meteorite.

"Is that so?" Torregia chuckled amusedly. "I don't think so." With that, Torregia suddenly vanished in a flash of purple light.

Just as the new generation of Ultraman were wondering what was going on, a lot of bombs suddenly appeared around them.

"No, it's a trap!"

Before the new generation of Ultraman could react, the bombs detonated one after another, and the new generation of Ultraman were engulfed in flames.

"Seniors!"

With a shout, Ultraman Taiga, Taro's son, his teammates Ultraman Titus, the Sage of Power, and Ultraman Fuma, the Overlord of Wind, arrived.

"Seniors, are you alright?"

"We, we're fine." Yinhe forced herself to get up.

“However, we are indeed unable to pursue Tregear now,” Ultraman Orb said.

"Then leave it to us!" Taiga said confidently. With that, Taiga was about to leave with Titus and Fuma.

"Wait!" Yinhe called out to them, "We'll give you our power; perhaps it can help you."

After saying that, the new generation of Ultramen gave their power to the Taiga trio.

Orb, Rosso, and Blu's power was given to Taiga.

Geed, X's power was given to Titus.

Galaxy, Victory's power was given to Wind Horse.

"Thank you, seniors." After thanking the new generation of Ultraman, Taiga's trio left.

"Taro, it's been a long time," Tregear said, looking at Taro.

"Tregear, come back with me!"

"I do not want it."

"Father!"

"Taiga?" Taro looked at Taiga's trio with a puzzled expression.

"We're here to help you!" With that, Taiga's trio rushed towards Tregear.

Seeing this, Tregear remained unfazed, raising his hand to unleash a Torella Aldiga (Tregear's signature finishing move, an enhanced version of Torella Kelpos, which releases black, blue, and white electrical currents from his hands, making it even more destructive) that blasted Titus and Fuma into light particles.

"Titus, Windhorse!"

Upon seeing this, Taiga immediately rushed towards Tregear, ready to fight him to the death.

Unexpectedly, Tregear grabbed his neck and, with a flick of his wrist, unleashed a Torella Calpos (Tregear's simplified beam technique: a black, blue, and white electric current destroying beam emitted from his palm), shattering Taiga into light particles.

"Taiga!" Taro was devastated at the sight. Seeing Tregear laughing, he unleashed his own Ultra Bomb, colliding with Tregear's.

"Uh, how did you get involved with the new generation of Ultraman?"

"In order to prove that chaos is the truth, I started to trip up the Ultra Warriors and subvert them."

"For example, on the planet Kobor, the aging cosmic witch thief Murunao was bewitched and given the ability to turn things into gems."

"It also released Greeza, the void monster that had been knocked into the sun by Ultraman X."

"The genes of the cosmic white blood cell, Lugiel, were modified, causing Lugiel to go berserk and attack Earth, resulting in the deaths of the previous generation of Ultraman Rosso and Ultraman Blu."

"Then he fought on Earth against Ultraman Geed, Ultraman Rosso II, Ultraman Blu, and Ultraman Grigio."

"The reason I'm involved with the new generation of Ultraman is that I had a conversation with the Dark Killer team on Planet Tenebris, asking them to create Dark Ultra Warriors. I wanted to prove to the Ultra Warriors that light and darkness have equal value."

"And then I became completely involved with them."

"Well, that's quite profound."

"Then, I fought Taiga and the others on Earth, tripping them up and setting traps, all to overthrow them and prove my theory."

"Later, Taiga gradually succumbed to darkness by repeatedly using my 'Monster Light Ring' and drawing upon its power."

"I thought I had succeeded, but with the help of Taiga's teammates Titus and Fuma, as well as his human form Kudo Yuuki, we escaped from the darkness."

"Have you given up?"

"Of course not. But later I was distracted because I saw Taro's figure in Taiga and was hit by his four-man team's beam."

"died?"

"No. But the seal of the evil god on my body has been broken. The evil god has descended to Earth."

"However, the arrival of the evil god has given me another chance."

Taro uses the Ultra Bomb to charge towards Grimd, and...

"Oh!"

"Father!"

Seeing Taro recover, Taiga felt a little worried. As he walked over, Taro kicked him to the ground and then stomped on him relentlessly.

“Taiga’s father seems a bit strange,” Kudo Yuuki said with a puzzled look.

At this moment, Yuuki and the new generation of Ultraman on the ground noticed that Taro's timer had turned red.

"Could it be!" Titus exclaimed in sudden realization, "When the Ultra Bomb was used just now, Grimd's power flowed back into Taro's body?"

"Those who swore to believe in the light were swallowed up by darkness and fell into darkness. I thought I had succeeded."

"But later, with the help of the new generation of Ultraman, Taro was awakened by Taiga. Then I decided to take a desperate gamble..."

Toregia looked at Grimd in the sky, raised his hand and shouted, "I will completely liberate myself!"

Having said that, Grimd unleashed a beam of light that disintegrated and devoured Tregear. Then, Grimd grew to enormous size, releasing darkness that engulfed the entire Earth.

"We were about to defeat them, but..."

Taro blocked Grimd's attack and said to the New Generation Ultramen, "Everyone, give your power to Taiga!"

"Oh!"

Then Ultraman Ginga Victory

Ultraman X Beta Spark Armor

Ultraman Orb Tri-Form

Ultraman Geed Ultimate Finale

Ultraman Groob

He bestowed his power upon Ultraman Taiga Tri-Strium Form.

In a dazzling light, Ultraman Reiga, a being with a pair of horns, predominantly red and black with silver stripes and golden armor, was born.

"Then, all my attacks were completely ineffective against them, and finally I was defeated by that guy's final move."

"Reiga Ultimate Burst!"

Reiga unleashed a blue beam—Reiga Ultimate Burst—which collided with Grimd's Grim Ray. Ultimately, Grimd was struck by Reiga Ultimate Burst.

As he was reduced to ashes, Tregear looked at Taro lying on the ground, recalling the past. Filled with regret and resentment, he roared, "Taro!"

"Goodbye, my former friend." Torregia bid a painful farewell to Taro in his heart.

With a roar from Toregia, Toregia and Grimd disappeared together in the explosion.

Taro gazed at the firelight with a complex expression, murmuring, "Tregear."

"And that's how I died."

"Completely dead."

"And then, I came here."

After hearing Torregia's words, everyone fell silent. They didn't know what to say.

"Do you know why we're reluctant to talk about the Land of Light? This is the reason."

"Even if we had the chance to return to the Land of Light, we wouldn't agree, because that world can no longer accept us."

"We're actually a little worried. If you knew about our past, would you..."

"It's alright." Luffy stood up.

"what?"

Luffy smiled, but his eyes were filled with determination as he said, "You are all dead, so whatever you did in that world, you have already paid your dues."

"In this world, you don't need to carry anything anymore, because the past is the past. You just need to be yourself."

"Whatever happened in the past is irrelevant to the present."

"Because you are now my crew, my partners, my friends."

"Always will be."

Just as Tregear was about to speak after hearing Luffy's words, a loud shout rang out:

"Thanks, kid!"

"That voice is..." Chopper turned his head and exclaimed in surprise, "It's Brother Belial!"

Belial quickly landed on the ship with Law. As soon as they landed, Chopper and Usopp hugged Belial, who cried and shouted, "Thank goodness, Belial, you're alright!"

“Of course.” After saying that, Belial pushed Usopp and Chopper aside, looked at Luffy and said, “Thanks, little… no, Captain Luffy.”

Luffy grinned and said, "Don't be shy." He then extended his fist and looked at Belial with a smile.

Belial smiled, then placed his hand on Luffy's hand, and Tregear also came over and placed his hand on Luffy's.

Nami, Robin, Chopper, Usopp, Zoro, Franky, Sanji, and Brook all placed their hands on it. They exchanged smiles.

Kin'emon and Momonosuke stood alone to one side.

"Father, this..."

"Let's not bother them."