One Piece: Kaido's adopted son, starts with the Eight Gates Formation.

The moment those two words were uttered, Hyōsuke Ichibei's expression changed.

Yamamoto—who had now regained consciousness and was sitting silently in a corner of the God-Slaying Island—suddenly raised his head.

"Aizen sent me a message saying there's an interesting prisoner in the Soul King's palace." Lynn took out a lollipop, looked at it, and then put it back. "I've already got the Soul King. But I haven't seen Aizen himself yet."

"Young Master wants to go to the Avici Hell?" Jin frowned.

"What is Avici Hell?" Kaido asked, looking completely bewildered.

Hyosube Ichibei took a deep breath and explained, "Aizen Sousuke, former captain of the 5th Division of the Gotei 13, was sentenced to 20,000 years of imprisonment in Avici Hell for serious crimes such as rebellion. He is sealed in the deepest part of the earth, sealed by layers of barriers, theoretically making it impossible for any information to be transmitted out. But he—"

"He did send me a message," Lynn interrupted him, "with your butterfly."

"Hell Butterfly," Hyosube Ichibei corrected, then shut his mouth again. There was no point in correcting this little devil's choice of words.

Kyoraku Shunsui had somehow climbed onto the God-Slaying Island and was now standing unsteadily at the back of the crowd, his face half-covered by a straw hat. Upon hearing the name "Aizen," he spoke with unusual seriousness.

"There's a reason that man is imprisoned in the deepest hell. His ability—'Mirror Image, Water Moon'—means that once someone experiences liberation, they are forever under his hypnotic control. Among the Grim Reapers present, with the exception of a few, almost everyone fell under his spell."

"So what?" Kaido said dismissively. "If the young master wants to go see, let him go. Who can stop him?"

"I'm not trying to stop you," Kyoraku said, adjusting his straw hat to reveal one eye. "I'm reminding you—Aizen couldn't have sent that message to the young master without a purpose. He's the most terrifying person I've ever met, not because he's strong, but because every word and every action he takes is meticulously calculated."

Lynn glanced at Kyoraku.

"I know everything you're saying."

Kyoraku was taken aback.

"But I still want to go see it." Lynn jumped down from Kaido's arms, floating in mid-air, and turned to Kaido, saying, "Dad, let's not go to God-Slaying Island yet, let's stop here."

"Alright!" Kaido gave the order without saying a word. The engines of the God-Slaying Island shut down, and the spatial rift slowly closed.

The white-bearded man sighed, "That brat, he's always doing whatever comes to mind."

BIGMOM was quite excited: "Aizen? What does that person's soul taste like?"

"Don't eat him," Lynn said.

"Why--"

Lynn floated up to Hyosugi Ichibei, looked up at him, and said, "Monk, lead the way. To Avici Hell."

Hyosube Ichibei tightened his grip on the lollipop. He wanted to say something—like about Aizen's danger, or that the seal on Avici Hell shouldn't be broken lightly—but he looked into Lynn's eyes and swallowed all his words.

No one can stop this little devil from doing what he wants.

"……plz follow me."

Hyobu Ichibei turned around and led Lynn towards the underground.

Kaido followed without a doubt. Whitebeard followed too. Akainu hesitated for a moment, then followed carrying the statue of Barragan. Kenpachi Zaraki, needless to say, attacked anyone he encountered and didn't care where he went.

The group began their journey into the Avici Hell beneath the Seireitei.

On the island of the Godslayer, the red-haired man still stood on the edge, facing the Seireitei below, which had been reduced to ruins.

Hawkeye walked over to him.

What are you worried about?

Shanks was silent for a moment: "That Yhwach, Kaido defeated him, but didn't kill him."

"Um."

Do you think an emperor who has been defeated but not killed will obediently admit defeat?

Hawkeye did not answer.

The redhead turned and took two steps, then stopped: "Keep an eye on things up there for me. I'm going down to follow the young master."

"Why are you the one who went?"

"Because my Observation Haki is the strongest." Shanks said this and disappeared with Shunpo.

Hawkeye watched the direction he disappeared in, shook his head helplessly, and placed his hand on the hilt of Black Blade Night.

In the distance, at the edge of the dimensional barrier.

In the shadows, Yhwach's finger twitched.