Hey everyone! Thanks a lot for all the supportive reviews you've awarded KISA with. I might have sounded like Mayuri had a thing for Isane. Yes, he does; the kind of thing he had for Ishida and all other people that 'intrigue' him, OK? Nothing else than that; just the kind of inquisitiveness it awakens in his evil inside him that made him desperately wish to experiment with that person and nothing else…

Mysterious Once Again

While Kisa was living an experience wilder than her sweetest dreams, all captains and representing lieutenants, but Kuchiki Byakuya, were at a meeting with Yamamoto soutaicho.

-We being here reunited must be kept from some people. – Started Yamamoto. - None other shall know of this meeting. As you know, I let Kisana take shelter in Seireitei from what she has warned us about; the 'Black Servers'.

Then Yamamoto's eyes get fixated on Soi Fon. It was the signal that indicated her it was time for her to speak (as they must have agreed before the meeting). She stepped forward and talked:

-I'm afraid to inform you that the captured men identified as Black Servers; who were found near Kisa in the forest when the symbol activated; have committed suicide this daybreak in an attempt to not let us take any information from them. We don't have another clue to where they lie. Some groups were sent to the real world early and headed to the abandoned building Kisa has told me about; I accompanied them in the search. Unfortunately, they were no longer there. It seems that they knew we were coming and they transferred without leaving any trace of their reiatsu behind. However, a team is still inspecting the building. The structure is quite elaborate; it was specifically designed to hide reiatsu and confuse the senses. We started an investigation on the building's history. We were able to see that the place has existed for over 85 years. It was publicly announced to have the purpose of becoming a factory, yet it never started to work as such. The moment it was finished, it was officially announced that the heads of that factory had hit bankruptcy and therefore had no way to start it running. There were no offers on the building and since then it's been abandoned. Yet it still stands. Mysteriously, it's been protected by the human government from the demolishing petitions. Seen from that perspective it's safe to say that whoever the Black Servers work under has good connections and even power to control the administration in the human world. It is unfathomable how they managed to do so without our notice.

Most of the present at the very least raised an eyebrow as they listened keenly to Soi Fon. Some even gasped for air. It was highly estimated that things weren't going to be easy before. Now it was beyond estimation; it was an obvious fact.

-We're working on a background research on the two names of that were given to Kisa as Kumamoto Masashi and Yahima Matsuharu. - Continued Soi Fon. - It's not a good start at all, but, inopportunely, there's nothing else left for us to search.

Soi Fon stepped back into the line. Her face was looking down and, even though she pretended to be serious, she was completely raged for talking such awfully 'pathetic' news; as she herself would say later. Her fists were clenched so hard they were about to draw blood out of her palms.

-We still don't know why exactly they'd be after Kisana's blood. – Continued Yamamoto. - We know some of its properties but not everything about it. Until we find out more about it, we must make sure the Black Servers don't get near her. She is dangerous but I determine it certain that she isn't planning an attack nor is she willing to. But if we make her feel strong emotions, especially anger, it's likely she will attack again. That's why this must be kept a secret from her own ears; at least until we find out something more solid. Now, Hitsugaya taicho, please talk about what you told me earlier.

Hitsugaya Toshiro stepped forward. His expression cold as ever yet his eyes looked like deep blue fire flames, burning with wrath and pain.

-As I fought Kisa, back at the forest, our swords clashed. Some images then started to show at my mind. It felt strange at first but then I understood. Through Hyorinmaru, I was able to see inside Kisa. Some of her recent memories showed inside my mind and I didn't understand how that was possible. It should only happen with zanpakuto. As she invoked her sword, I could hear some screaming. I didn't quite realize what was going on but, as the fight evolved, I could understand it clearly. She was facing Hyorinmaru with a screaming zanpakuto.

As they all heard it, all eyes widened in total disbelief, except Yamamoto's.

-B-But that's impossible! – Exclaimed Renji, representing Division 6. – She'd have to have shinigami powers to use one, even if it was on sealed form! Kisa's reiatsu is great when her symbol activates but, as the seal counteracts it, her reiatsu is practically 0! Her presence is like none I've ever felt before. She isn't a shinigami. Are you sure of what you're saying, Hitsugaya taicho?!

-Of course I am, Abarai! – He yelled back with an intimidating tone. – Do you seriously think I'd have even brought it up if I wasn't certain?! I heard it, Abarai Renji! Yes, there are plenty of things that point out to me being mistaken but I recognize a zanpakuto when I fight one and Hyorinmaru could see it too.

Then, he retook his serious expression and the calmness of his voice yet his eyes would stay mad, angry, frustrated to his own words. Deep inside, he wanted to agree with Renji. He wanted to have a single reason why he should doubt his own lips…

-I know that there must be something about her. – Hitsugaya continued. - She told Soutaicho about this man called Yahima Matsuharu. Her description of him sounds pretty much like a shinigami; he had a zanpakuto, he had a high reiatsu, his fighting skills were those of a shinigami. If he knew her as he claimed to, then she probably had some connection with him. She let us know that she feels nostalgic here even though she wasn't supposed to be here before. It's very likely for her to be more related to the shinigami than we might understand now.

It was so hard on his throat to just let his voice speak out loud that last sentence; it was more like a faint whisper in the air. Still, the atmosphere was silent and everyone was very attentive to his every word and they reached everybody's ears.

Toshiro could no longer talk and then he simply gazed at the floor and stepped back into the line.

His fist formed at his side and was filled with pressure. It was the only 'proper' way for his anger to release it from his hand, at least while he was at the presence of the soutaicho, causing his haori to wrinkle slightly. How unbelievable it was for anybody who knew how organized and clean Hitsugaya Toshiro was… His uniform was always in the most impeccable state. For them to watch him to do that was like watching Matsumoto say 'Hey taicho! Let me help you with the paperwork'.

Everyone was strived at this. Most were looking down, except for Kenpachi… Oh, no! He was happy, I assure you. Now he could fill even more excited about fighting her one day. He didn't exactly like the news either, though. It was so not what anyone thought about Kisa when they met her. They all thought she probably had never even heard the word 'shinigami' before. It was too unbelievable.

-This is a case unlike any other we've ever had to face before. – Said Yamamoto with his eyes open. - But we must understand how serious it would be to make the wrong decision. We have to protect her from the Black Servers if they're our enemy but we can't tell for sure. And we can't tell for sure if it's a good idea to keep her inside, either. Yet, it's the only thing we could do. It would be far harder if she were freed into Rukongai. So do not give the symbol any reason to activate. Unohana taicho, Kurotsuchi fukutaicho, how is the project going?

They both stepped forward.

-Kurotsuchi fukutaicho, Kotetsu fukutaicho and I have ran several tests with the blood samples I got from Kisa – Chan some time ago. – Started Unohana. - It's already been a week since we started to test her to understand her blood properties a little better. So far, it still remains a mystery; all I can say is that I'm glad she didn't give her blood to the Black Servers. Who knows what they're planning to do but I know it can't be anything good. Her blood is harmful on shinigami and also on hollows and even humans though not as much.

-We've been working on finding a way to control her blood's power so it appeases in its properties to damage. – Continued Nemu with her always calm and shy self. - Just this morning, we've already thought of a way to do it. If it all goes according to what we expect, her blood will be up to 10 times less harmful. Its lethality will not be anymore. All damage it causes can get worse as the reiatsu is higher. It is estimated that a shinigami of captain level could be severely hurt but not to death and with treatable damage and so on. It is likely it won't hurt the average human at all. It is also in our expectations to appease her power. She'll be far calmer and it won't be as easy for the symbol to activate again.

-When will this method be tested? – Asked a slightly intrigued Yamamoto.

-Isane is testing it at this very moment, Soutaicho. – Answered Unohana. – Kurotsuchi taicho is also supervising the procedure; so I can guarantee the result will be accurate. Our expectations are set on this method.

-Is he in a good enough condition?

-Yes. – Replied Unohana. – He's just fine to supervise. He'll be laid off in a couple of days… But don't worry; you know that Isane once worked with Urahara Kisuke. She's pretty skilled in testing. I trust her. – She finished with a smile.

-Very well then. – He said. – I'll be expecting word from the result as soon as it comes to your knowledge.

-Yes, Soutaicho. – Unohana replied.

They both stepped back to their formation.

In that very moment, at the 4th Squad, Isane was testing the new method with Kisa's blood.

Kurotsuchi Mayuri, without his mask (!), was standing next to her. He could only look with his serious and anxious face. He wouldn't admit it but that was one of the most exciting projects he'd ever had witnessed.

He was slightly impressed that a 4th Squad lieutenant showed so much skill, but not as impressive if you consider she was once a co-worker with Urahara Kisuke… He was somehow mad, for Unohana wouldn't let his hands be on the project. He had helped with the theoretical part but he couldn't use the skills he missed so much using back at the 12th's quarters… He could only feel his world was shattering if he couldn't do what he wanted just because he was not in an 'appropriate condition for labor'; as Unohana would call it.

He'd be annoyed to see Nemu participate as she would feel awful and would pretend not to notice him. It's not like she had much choice. She'd do anything her 'father' would ask her to but her cooperation to them was requested by the soutaicho himself.

Before the genshibai incident, he would have for sure tried to kill her in that instant so he could test it but he thought twice after that day… Not to mention the consequences with a furious Unohana Retsu… Yes, he had witnessed her power as Kuchiki Byakuya had, and as had many people in fact. He always thought of Isane Kotetsu to be a submissive assistant but then he realized he ignored her too much to realize her 'other side'. He'd find it intriguing and would definitely try to find out more about her skills later. Right then, he had to see a major thing happen.

Isane had added a substance to the blood and, with a special microscope, was observing the sample of her red blood cells. As soon as she applied the substance; which they had all been working on for weeks after 38 failures, no sleep in the whole week, barely any breaks to eat a quick snack from vending machines, without working in the hospital, so many mind-boggling puzzles and so many failures to organize their thoughts and work together; using a needle, it all changed drastically. The color was turning to a less intense red. The cells unusual high speed slowed down to normal. The size was significantly smaller, from 'O' to 'o'.

Isane smiled as she saw the reaction with her left eye. She then raised her head with her eyes closed as she sighed deeply as if she had been freed from the torture and relieved that her work would be fruitful. She then turned to the staring Mayuri Kurotsuchi for him to supervise. She stepped aside to the left. Her face expressed that she was certain all the effort was worth it. He bent to see it with his right eye. As he straightened his posture, he turned left to see Isane smiling. She was convinced he'd say it was a success.

-Well, this has pretty good shot to work. – That was all he could say while sounding upset; not over his envy. – It's the one that has the highest chance of functioning. However, there's still a considerable chance against its effectiveness but it seems like we can use it. This is the best we've all thought about. If it doesn't work, it isn't likely anything else will. Improving this would be truly interesting and challenging yet it would take too much time, more than we might have at our disposal.

-Kurotsuchi taicho, aren't you happy that it has passed the theory test? It has a great chance to work; which is bigger than the one against it, even if only slightly, but yet bigger! I have faith in our work, do you not? – Isane questioned.

He just turned around and smirked out of her eye's reach. He walked away and, as he was about to open the door, he turned with a serious face; which yet revealed how intrigued and deeply worried about it he was:

-Send a hell butterfly to Unohana taicho and Nemu immediately.

And just like that he left. Isane was too excited to mind so she just did as he told her too.

The meeting had been over 30 minutes before the news of success arrived to Unohana's ears. She immediately sent the hell butterfly to Yamamoto. She couldn't help smiling. Not even Nemu could help her small smile from happening as Unohana told her. It was a great thing.

Yamamoto felt better with Kisa staying in Seireitei now that she could be 'controlled' up to some point. But the hard part was coming forth. Who would tell her about her blood?

It was highly likely that she might have known before her memory going blank… But they still were gonna have to tell her. She wasn't the smartest ever (remember when she got away?), but she wasn't an idiot who would accept any shot of which she didn't even know what it contained to be injected through her skin…

Unohana Retsu seemed like the most appropriate choice. She was just hoping that her telling her wouldn't let her symbol activate.