Two days later, Soifon finally agreed to become Kisuke's experimental subject but with additional conditions that Kisuke would provide equipment and resources for the Gotei 13 for them to adapt faster to the changes and allow her to leave from time to time.
After pretending to hesitate for half a day, Kisuke agreed to her terms.
Naturally, Soifon is aware of the risk that Kisuke would instead send bugged equipment but it doesn't really matter since he already does it on his own.
Within the training ground where Soifon spent most of her time to further enhance her detection abilities and improve her Shunkou, "I have one final condition."
"Depending on what it is, I might add more conditions on my side to balance it out." Kisuke, who had been helping her, answered.
"It's nothing much, but allow me to confirm first. Since you're allowing me to leave, do you have a way to enforce secrecy on my side?"
"Through Magic, yes. It's a form of contract that both of us have to fulfill."
"And the price for the breach?"
"Death." Kisuke answered without pause, "Any less would make the contract too light."
"That's fine. That's already what I was expecting." Soifon nodded, "Then I want to add a single condition that you won't plant a 'Trojan Horse' within Soul Society."
Kisuke didn't say anything immediately and after thinking about it, he modified her condition, "I'd like to limit that to within the Seireitei."
Soifon immediately frowned and thought, 'Is he planning to do something in the Rukongai? There are few important places within it but...'
After internally deliberating on it, "Fine."
"It's my turn to add a condition then."
"What? I only asked for a small thing and you're still going to add something else?"
"It's nothing too big. I just want the contents of this contract to be a secret between us."
"...Why?"
"Let's just say I don't want others helping you find a loophole within it. Is that fine?"
"No, because it also means that you're already considering taking advantage of a loophole."
"I won't deny that since it's indeed a possibility. However, you added a condition so it's only a fair trade for me to add my own." Kisuke then shrugged his shoulders, "We can also just forget about this section if you don't want it. In any case, I'm already perfectly fine with the contract as it is."
Although Kisuke was acting calm, he's quite nervous that Soifon would back down, 'If I can't keep the contents of the contract a secret, then the fact that I proposed to limit the 'Trojan Horse' to outside the Seireitei is going to raise some eyebrows from sharp people. She must be thinking that I'm about to do something within Rukongai, but that's not the only place outside of the Seireitei within Soul Society.'
Soifon contemplated and after a few seconds, she started scratching her head in frustration. "Alright. We'll have it your way." Thankfully, her duty and desire to protect the Seireitei won.
With Soifon finally agreeing, Kisuke took out two scrolls with their previous conditions already written on them. After adding the last part that they'd just discussed, the two of them spent about an hour tweaking the words of the contract to make it more precise and specific to avoid as many loopholes as possible.
"So do we just sign this paper?"
Kisuke shook his head, "We rip it at the same time. After that, it should take effect."
While Soifon still had questions on how this would work, both of them ripped the paper, and as soon as they were ripped in half, the four pieces caught on fire with blue flame, startling Soifon for a bit before letting the two pieces in her hand go.
Kisuke did the same and the four flames started floating above their heads before combining into one. The next moment, it changed into a bright red flame and divided into two, entering each other's chests respectively and disappearing.
Even without Kisuke explaining, Soifon knew what that flame meant, "So this is the death you were talking about."
Kisuke nodded, "It only works when both flames are present within the contractors. If one is extracted through any method, the other would be alerted and if you're unlucky, it'll kill you before you can fully remove it."
"...I see. I'll make sure to remember that." Soifon then looked back up to Kisuke, "What should we do now?"
"Take this." Within his sleeve, Kisuke took out a paper and pen, "Write something that'll make others believe that you're not in any danger. I'm going to the Human World today and I'm sure they're waiting for me there."
Soifon thought for a bit before writing a few words and passing it back to Kisuke after injecting her own Reiryoku within.
Kisuke received it and read it for a bit before making a wry smile, "Are you sure someone's going to understand this?"
"Omaeda will."
"Alright. I'll leave right away. Let's continue once I return."
Kisuke disappeared with his Teleportation Magic and Soifon thought that this technique was really convenient but also dangerous.
She sat down on the couch and heaved a long sigh while thinking, 'He didn't notice... I hope someone on that side notices it.' As much as she didn't want to admit it, Kisuke and her are quite 'close' and she was betting on it, 'I'm sure that he'll be sent out to meet him. I'm betting on you, as someone who discovered Sosuke Aizen's traitorous intentions first.'
.
.
.
Kisuke, while wearing a white suit, white fedora, and white blank mask that greatly contrasted his long black and straight hair, came out of a certain alley. As he walked the streets of Karakura Town, nobody could seemingly see him while he went with the flow of the crowd. However, people wearing Eastern black attire standing on top of the building saw him and immediately started contacting their superiors.
Around half an hour later, Kisuke entered the house that Serafall and the young girls had found.
After another half an hour, Kisuke could feel numerous presence appearing and gathering around the house, '...Hmm, aside from more than a hundred soldiers, they also sent two Captains. They're treating me as a bigger deal than I thought.'
Kisuke stood up from the couch and walked to the main door. And when he opened it, he could see four individuals standing beyond the gate, "To whom do I owe the pleasure of receiving such an important entourage?"
The tall man with jaw-length blonde hair with a straight cut who was standing in front of the group replied, "We're here on behalf of the Gotei 13's Captain Commander and the members of the 2nd Division. Do you have some time to talk?"
"Of course. Please head inside." Kisuke turned around to head back in, but the main gates of the mansion automatically opened for his guests.
Before entering, Shinji first checked on the people coming with him, "Rukia, I'll do most of the talking. Make sure that you keep in contact with our men outside. If you lose connection, immediately alert me."
"Leave it to me."
Shinji then turned to the other two, "Ise, Omaeda, your job is to observe the surroundings without being too obvious. If you find something, keep it to yourself for now, but if it's something urgent, inform both me and Rukia."
" "Understood." "
While answering in acknowledgment, Nanao's eyes were on Kisuke's leaving back.