At this time, it had been four days since Tsunade and others invaded the underground research institute of the Land of Rain.

In the midst of these four days, in the Land of Rain.

Aizen and Orochimaru and the others remained in the research institute all the time, researching the reasons for the transformation of the Oni Boy Pill and the others in the previous battle.

"Poof...."

As the needle slowly pierced into the body, the bright red blood was slowly withdrawn, squeezed into a tube, and then flowed into a large vessel.

The blood that was drawn was the ghost boy pill whose face was a little pale, and at this time, he couldn't help but glance helplessly at the needle on his right arm, and said bitterly in his heart.

Oh, my God.... It's been the first few days ....

At this rate, I'm afraid I'll never have the chance to continue working for Orochimaru....

The thought of this made his face seem even paler.

As if thinking of something, he couldn't help but glance at the figure beside him, and said in a slightly respectful voice.

"By the way, how did you get into this laboratory?"

I saw him gently pinching his chin with one palm, thinking for a moment, and said slowly.

"As far as I know, this time it should be just me, Jirobo, Left and Right who were brought to this experiment...."

Hearing the words of the Oni Boy Maru, it was right next to him.

I saw a fair-skinned young man in a light-colored kimono slowly turning his head sideways, his pale face expressionless, and his voice was very calm.

"I think it has something to do with the changes that have happened in our bodies before..."

Hearing his words, Jirofang and the others on the side also came over, tilted their heads, and said with some doubts.

"Change!?Is there any change in our body!?"

In this regard, Zuo Jin couldn't help but glance at him and said mockingly.

"You idiot, didn't Orochimaru-sama already make it clear before!"

"When we fought against the Thousand Hands Rope Tree, our bodies had a significant increase in strength!"

Hearing Zuo Jin's words, Jirobo's eyes couldn't help but widen and muttered.

"Is there such a thing!? Why don't I remember!"

In this regard, Ghost Boy Pill couldn't help but hang his head slightly, and said weakly.

"It's because we all forgot..."

"According to Orochimaru-sama, it seems that we have all forgotten what happened during the battle...."

I saw him stretch out a finger and compare it in front of everyone's eyes, and said slowly.

"It was because we didn't understand what exactly made us change that we did this experiment.... Do you make sense of that?"

Hearing his words, Jirobo nodded as if he didn't understand.

Everyone didn't pay attention to him anymore, after all, if you want Jirobo to understand this problem, I'm afraid it will take a lot of words.

The people who have been tossing and turning these days don't have the energy.

However, after hearing Oni Tong Maru's words, Jun Maro's face changed slightly, and his voice was still calm.

"Oni Boy Maru, did you just say that you have no memory of everything that happened during the battle?"

Hearing his words, Oni Boy Pill glanced at him suspiciously, and said as a matter of course.

"Yes, that's why I'm so distressed...."

"I don't know what caused it, really! This kind of thing happens to my body!"

In this regard, Jun Malu had no time to take care of it, but silently clenched his fists.

He lowered his head slightly, and his mind recalled the scene when he fought Tsunade and Rope Tree before....

Meanwhile.

Outside the laboratory where everyone lives, in an observation room, there are a lot of people staying at this time.

I saw that Orochimaru was wearing a white medical robe at the moment, staring intently at a device, as if he was observing the composition of the blood.

At this time, he didn't look like a ninja who was proficient in all kinds of forbidden arts, but more like an experienced scholar.

Kazumi also stood on one side, fusing and debugging the reagents in many test tubes, and her hands did not stop for a moment.

Aizen watched the scene quietly, not disturbing their work.

At this time, behind Aizen, Silver glanced at him and chuckled softly.

"Captain Aizen, what do you think is the reason for the difference between Kimimaru and Oni Boy Maru?"

Hearing his words, the corners of Lan Zhan's mouth hooked slightly, and his deep eyes glanced back at Yin, and said softly.

"The difference...?"

"It's hard to say this, in my opinion, the abnormalities that happened to Jun Maru that you told me are more like a broken face that is gradually maturing..."

"And what happened to the Oni Boy Pill is more like a void that is out of control because the power is not controlled...."

Hearing his words, a slightly surprised look appeared on Yin's face, but Aizen waved his hand lightly and continued to speak softly.

Of course, that's not entirely certain. ”

"After all... It stands to reason that the disfigurement that occurred in Jun Maro's body that you mentioned did not bring him a significant increase in strength. ”

"On the contrary, the loss of control caused by the void on the Oni Boy Pill and the others has only strengthened them a lot. ”

"But on that point, it's paradoxical...."

Speaking of this, I saw that the blue dye's deep eyes narrowed slightly, and said softly.

"So, that's the ultimate goal of this experiment, after all, the present void can't be considered in terms of the previous thoughts. ”

"Understand that the present void is based on the transformation of human beings, and it can only be so. ”

"Because of this, no matter what wonderful changes happen to them, we should have to accept it..."

"After all, ....."

Speaking of this, Aizen didn't continue, but a smile was slightly hooked at the corner of his mouth.

Hearing his words, Yin's eyes narrowed slightly, and he seemed to understand something for a moment.

The corners of his mouth couldn't help but hook slightly, and his narrowed eyes gently looked at Lan Zhan's back, and laughed softly.

"I see.... Captain Aizen, what do you think.... Does everyone here have the same potential as Ichigo Kurosaki..."

In this regard, a smile flashed in Lan Zhan's deep eyes, glanced at Yin, and chuckled.

"After all, Ichigo Kurosaki is only a special case among a few special cases, and even I can't see his growth clearly..."

"And... If it weren't for that guy in Urahara...."

Speaking of this, Aizen's words paused slightly, a cold glint flashed in his eyes, and he said slowly.

"In short, what happened to this group of children, I am more inclined to the masquerade experiment we carried out back then..."

Hearing his words, Yin's narrowed eyes couldn't help but open slightly, and his eyes flashed with a slight consternation, and he muttered.

"The masquerade!?"

To this, Aizen nodded slightly.

I saw a slight smile on the corner of his mouth, his deep eyes passed through the huge glass in front of him, and he slowly looked at Jun Malu and the others in the laboratory in the distance, and muttered softly.

"That's right...."

"The changes that have taken place in them seem to me more like a flash in the pan hidden in the body of the god of death..."

"I'm really looking forward to seeing what happens later..."

Hearing his words, Silver's expression was also slightly stunned, and his eyes couldn't help but look at Jun Malu and the others with Lan Zhan's gaze, and he didn't know what to think in his heart.

However, Silver's answer to Aizen was only hesitant for a moment.

Soon, as if he remembered something, he couldn't help but say softly to Aizen.

"By the way, Captain Aizen, if I'm not mistaken, Nagato's side has three tailed beasts ready. ”

"It's better to take advantage of this time to summon the remaining few people to this world..."

Hearing his words, Aizen tilted his head slightly, glanced at Yin with a smile on the corner of his mouth, and chuckled.

"Silver, when did you become so interested in them?"

In this regard, Yin's eyes narrowed slightly, a smile like a fox appeared on his face, looked at Lan Zhan, and said softly.

"If it was me before, I'm afraid I'd rather not see those guys in my life....."

"But... Now I sincerely hope to see you, Captain Aizen, lead us to success, even... Kill back to the Corpse Soul Realm..."

"Based on this premise, that's why I desperately want to meet those guys..."

Speaking of this, I saw Yin's eyes narrowed slightly, the corners of his mouth raised slightly, and he smiled softly.

"After all, those guys are also rare companions to be trusted..."

Hearing Silver's words, Aizen muttered softly.

"Companions...."

After speaking, I saw him glance at Yin and chuckled.

"Since you say so, then... Let's go...."

"Before they find out why, summon those guys into this world...."

Hearing his words, Silver bowed lightly and said softly.

"Thank you for your kindness, Captain Aizen...."