"You would voluntarily become a test subject? That is quite a strange thing, Captain of the 4th Division." Mayuri said with some surprise.
"Oh my, it's because I trust you, Captain Kurotsuchi." Unohana jumped down from Minazuki in front of everyone, then smiled with a 'gentle and kind' expression.
"Won't you reconsider?" Mayuri asked again.
"It's fine. This experiment will definitely succeed..." Unohana squinted and smiled, then suddenly revealed a sly expression and said: "If you came all the way to Hueco Mundo, synthesized the data of Arrancar technicians to analyze the Garganta, and still failed, Urahara Kisuke would surely mock you mercilessly, right?"
Unohana's words directly pushed Mayuri into a 'corner'. Failing and being ridiculed by Kisuke was something Mayuri absolutely could not accept under any circumstances.
"Hmph..." Being provoked by Unohana's words, Mayuri snorted very unhappily.
"You'd better think this through. 'Completing the analysis' means I can even close the Garganta midway!" Mayuri said with a threatening tone.
After all, Unohana's status was not ordinary. So although Mayuri was always 'lawless', he actually didn't really want Unohana to become a test subject. If something happened to Unohana, the consequences would be disastrous.
Unfortunately, Unohana completely ignored Mayuri's 'threat'.
"You can even do something like closing the Garganta midway? That's really impressive... I have more and more confidence in Captain Kurotsuchi's research." Unohana said with an indifferent smile.
Having said that, Unohana had Minazuki, floating nearby, spit out Sojiro from its stomach.
Thud!
Sojiro fell directly from mid-air onto the ground.
"Huff, huff, huff... finally... I'm saved..." Sojiro greedily breathed the air of Hueco Mundo.
Although his injuries healed much faster inside Minazuki's stomach, it was an experience he never wanted to go through again.
"Well then... Isane, you stay here to assist Captain Kuchiki and the others. I'll go to the Living World through the Garganta first."
Unohana said to Isane, then said to Captain Kurotsuchi: "Captain Kurotsuchi, please prepare to open the Garganta."
"Cap... Captain!" Isane suddenly gathered her courage and said: "This is an experiment after all. If something goes wrong, wouldn't you be in danger, Captain? So, shouldn't we follow the original plan, rescue the Hueco Mundo Expeditionary Force and Captain Hitsugaya's Arrancar friend's companions, and then ask them to help open a Garganta? Isn't that also a way to leave Hueco Mundo? Why must we take this risk?"
Hearing Isane's words, Unohana smiled sincerely and said: "Isane, thank you for worrying about me. However, Captain Hitsugaya's Arrancar friend's companions probably aren't very strong. And after being imprisoned, Aizen surely found a way to prevent them from using Garganta to escape Hueco Mundo."
"So, not to mention whether they will have the ability to open a Garganta shortly after being rescued, even if they can open one, given their strength, it would probably be very difficult to maintain it for long. But there are several hundred people, including the Shinigami of the Hueco Mundo Expeditionary Force and us. So, it would probably be very difficult for everyone to evacuate from Hueco Mundo safely."
"Originally, because there was no other way to leave Hueco Mundo, I wanted to give it a try. But now that Captain Kurotsuchi has completed the analysis of the Garganta, naturally we should choose the better method." Unohana explained patiently.
"But... but..." Isane stammered but couldn't find a way to persuade Unohana.
"That's enough. Captain Kurotsuchi, please prepare to begin." Unohana hardened her heart and ignored Isane's protests.
"No! Captain Unohana! Let me do it! If someone has to be the test subject, let it be me! After all, I was Captain Kurotsuchi's chosen 'Test Subject No. 1'!" Rangiku stepped forward and said.
Mayuri's original target had been her. Regardless, she couldn't let someone else take the risk for her, especially not Captain Unohana, who had a very good relationship with her own Captain.
"Really! All of you acting like it's a final farewell, as if my experiment is so dangerous!" Mayuri said somewhat angrily. "Enough of your arguing. I've already decided! Lieutenant Matsumoto will be Test Subject No. 1..."
"Oh my? Kurotsuchi! Since when did you have the authority to decide things for my subordinates!!!" An icy voice suddenly came from behind Mayuri.
"What!? This voice..."
Hearing this voice, so cold it could freeze even the soul, Mayuri's body couldn't help but tremble subconsciously. He quickly turned around to look.
"So it is you, Hitsugaya Toshiro..." Mayuri said with a grave tone.
"Hmph! After not seeing you for a while, you've really become bolder, haven't you, Kurotsuchi Mayuri!" Toshiro's voice was cold.
Earlier, after breaking free from the dimensional space, Toshiro had not gone directly to the Living World. Instead, he headed straight for Las Noches to see how the Shinigami in Hueco Mundo were doing. He had just followed the Reiatsu to this location when he heard Mayuri threatening his subordinate to be a test subject.
"Hehehe... thank you for the compliment, Captain Hitsugaya. For a researcher, one must boldly explore unknown things..." Mayuri played dumb directly in front of Toshiro.
"Do you think I wouldn't dare to kill you, Kurotsuchi!" Toshiro stared at Mayuri expressionlessly.
"At least you don't dare right now... If you kill me, no one can open a Garganta, the Hueco Mundo Expeditionary Force Shinigami won't be saved, and you... won't be able to immediately rush to the Living World to participate in the decisive battle with Aizen, right?" Mayuri still said stubbornly.
He, Kurotsuchi Mayuri, had always been unruly. He often ignored even Yamamoto's requests, and had even conducted various illegal experiments behind the scenes. Yet he still lived well. Why? Because he, Kurotsuchi Mayuri, was 'useful'! Soul Society couldn't do without his research results. So he feared nothing!
And now, Toshiro also needed his help. So he also believed that Toshiro wouldn't dare to do anything to him!
"No one can open a Garganta? Hah! You overestimate yourself, Kurotsuchi Mayuri." Toshiro sneered disdainfully, then turned around and faced the void.
[True Dragon Eye!]
An ice-blue light bloomed from Toshiro's eyes. Then his gaze pierced through layers of spatial obstacles, locating the coordinates of the original location of Karakura Town in the Living World.
Then Toshiro condensed powerful Reiatsu in his right hand and casually slapped it into the void.
Crack!!!
Space shattered like a mirror. A pitch-black passage directly appeared in the void.
"Hmph! Opening a Garganta... isn't that simple?" Toshiro said calmly.