Presumably, Seiz left the Devil’s Sea because Gluz Deward "captured" it.
After learning that Seiz of Phantom Spirit City had left the Devil’s Sea, No. 01 became interested in Seiz’s lair. After all, Seiz was a powerful Extraordinary Life, and he thought he might find some treasures there to enhance himself.
Ultimately, whether he found any treasures, No. 01 didn’t mention, but he did find a Sea Beast cub.
Based on various clues and details, the Sea Beast cub is likely Seiz’s bloodline.
At this point, what Number 01 intends to do has become very clear.
Since he has no way out, he plans to destroy the bloodline of the Diamond Citizen lineage. Given Gluz Deward’s attitude towards the Diamond Citizens, it will definitely cause him great pain.
With more messages from the Beast Mark, Number 01 learned that the pursuit team was closing in, so he began to take action.
Using the organs of young Sea Beasts as the final experiment subject, Number 01 gathered all the combat personnel and launched an attack on The Nest.
...
After reading the letters between the Beast Mark and Number 01, Angel finally understood why Number 01 had suddenly become uncharacteristically aggressive and why he was superficially complying with the Lacey Association.
Because the external pressures forced him to make such a choice.
He had no longer any regard for the consequences.
He just wanted to go on a frenzy, and by hunting the young Sea Beasts, take a bite out of Gluz Deward’s flesh.
But will it actually have an effect? Or is it just Number 01’s imagination, and Gluz Deward may not actually care? The answer is unknown, but it’s clear that Number 01 no longer cared. Even if it’s an illusion, it doesn’t matter anymore.
Angel felt a slight sense of lament for Number 01’s situation, but that was all.
Putting down the letters, Angel opened the Mind Ribbon, preparing to inform Nis and the others of the situation here.
After all, Number 01 was preparing to hunt young Sea Beasts, and if Gluz Deward would indeed rage over this, it would be best for them to quickly distance themselves from here and definitely not get involved.
As soon as Angel opened the Mind Ribbon, which had been blocked for a long time, he immediately heard a voice coming through.
But it wasn’t the usually talkative Nis; instead, it was... Reynaud.
"It’s that feeling again, moving... Oh, it seems to have gone above us," said Reynaud.
"Above us, you mean the first, second, third floors?" Nis exclaimed.
"It seems so." Reynaud continued, "How could it be moving on its own?"
"Did Angel take it away? After all, Angel was on the fifth floor before," Kanter speculated.
Nis said, "Possibly, let’s ask Angel. Toby, are you there? If so, call Ange..."
Before the words were finished, Angel spoke, "I’m here, what happened?"
"You were there originally? Didn’t you hear?" Nis asked in surprise.
Kanter said, "Let me explain. It’s Reynaud; he just deepened his perception of his body and sensed that it seemed to be moving. Initially, it was on the lower five floors, but now it seems to have moved to the upper floors. Angel, did you take his body away?"
As Kanter’s words fell, a series of thoughts flashed through Angel’s mind, thoughts he had previously overlooked but now exploded all at once.
Yes, Reynaud’s body!
Before, he always felt like he was forgetting something, and now he realized it was Reynaud’s body!
But why did he overlook it?
Angel furrowed his brows and temporarily pushed the question aside. What he needed to think about now was what happened to Reynaud’s body?
Angel quickly organized his thoughts.
Before he came to the fifth floor, he thoroughly checked the main control node and did not find Reynaud’s body.
Moreover, apart from that strange shadow demon, there was no other living creature on the fifth floor... no, there was one more, the Mist Shadow.
The Mist Shadow can possess bodies.
Reynaud also said, the body was moving, from the fifth floor to the first floor.
Angel suddenly realized... Reynaud’s body may have been occupied by the Mist Shadow.
"Ugh—" Angel couldn’t help but gasp. After killing the shadow demon, he thought he was safe, that the Mist Shadow couldn’t find a creature to possess, but he hadn’t realized he had forgotten about Reynaud.
Reynaud’s body still had activity, so it counted as a living being. The Mist Shadow could completely possess Reynaud’s body!
"A mistake." Angel rubbed his temples and explained his deductions.
Nis said, "You, you actually forgot about Reynaud’s body?"
Angel himself found it strange how he suddenly overlooked this matter.
Kanter said, "These things are not important. Now that the Mist Shadow has possessed Reynaud’s body, we should focus on finding it as soon as possible."
Nis said, "The tricky part is the Mist Shadow seems capable of blowing up its host’s head at any time. Previously when it possessed the Flame Scale Summoned Demon, didn’t it blow up its head? Even if Angel finds Reynaud, it’s likely to blow up the head, and even if it doesn’t escape, Reynaud’s body could be useless."
Nis pointed out a key issue, which made Reynaud’s face turn pale.
Seeing Reynaud’s pained expression, Nis smiled and said, "However, it doesn’t matter if the body is dead; the soul is where it truly begins. Follow me, and I’ll show you what the climax of the soul means."
Ignoring Nis’s teasing, Angel said, "Let’s deal with the head explosion problem once I find it. I’m going back to check the first floor’s main control node now."
After a pause, he added, "By the way, there’s something else I need to tell you all. I found some letters in Number 01’s hidden room."
Angel was about to recount the contents of the letters to them while returning to the first floor.
But as Angel mentioned the "letters," he instinctively glanced at the envelope, which was sitting on the experiment table... and in the next moment, his gaze was drawn to the experiment table before him.
In the center of the experiment table was an empty rectangular space, and the letters had been swept to the side.
This empty space... seemed like it could fit a person?
As this thought emerged, Angel recalled when he entered this hidden room, a large amount of white frosty mist poured out, and the room was extremely cold.
Maya had explicitly stated in her prophecy regarding the whereabouts of Reynaud’s body that it was in a very cold place.
Recalling that he didn’t find Reynaud’s body while monitoring the fifth floor through the main control node, and the only unmonitored place on the fifth floor was the hidden room, the answer became clear.
Reynaud’s body was originally in the hidden room all along, laid out on this experiment table!