Mayuri Kurotsuchi sat across from Retsu Unohana as he contemplated how to approach the fourth division Capitan with his idea, "I know that we haven't gotten along well and often quarrel but I would like to make peace for a while for I have an idea that could possibly help the soul society fight Aizen and his arrancar! It is medically scientific so I was curious if you would like to help."

"Have you taken this idea to Head Captain Yamamoto?" At Mayuri's nod, Retsu leaned forward in her seat slightly and raised a skeptical eyebrow, "Capitan Kurostuchi, I am leader of squad four the healing division, and most of your experiments are harmed in ways almost beyond my repair. Why should I help you?"

"For the good of the soul society, and because Head Captain ordered it to be conducted."

"I will consider it if it wont bring physical harm to anyone in this experiment. What is your idea anyways?"

"No harm will befall anyone I can guarantee you that." Mayuri slowly grinned, "Unohana, I have been pondering this for a long while now; what if we combined four Capitan's into one? Would it be strong enough to defeat Aizen? So I came up with the idea to have a human host, a female one, carry a child of four captains to a term of six months-"

Unohana interrupted Mayuri swiftly, "Six months? Why six and not nine? Do all of the captains know of this?"

Glaring at her briefly, He continued after answering her question, "No one but us knows, nor will they know for a while yet. Growth hormones are the key for a quicker birth, I would have gone to three months but it would have ultimately been bad for the fetus and the mother. Also, this will make the child mature and age faster. Ageing should stop at eighteen though; Aizen isn't going to wait forever now is he." Briefly clearing his throat and swallowing, he continued again, "Now as I was saying; the only problems I have found, is that only one female in the entire thirteen squads is able to carry that child: but I don't know whom. And, how would I combine the Capitan's into one strong being, nor do I know who is compatible."

Unohana sat quietly while she contemplated this, "Well Kurotsuchi, get DNA samples from the captains and see which are compatible. Once you have that done, figure out a way to make a liquid that I could inject into the women of the quart guard squads and see whom it takes to. Of course, you must also inform me which Captains will be in the experiment, so that we can have them take care of the host who is to bare the child."

Putting a hand to his chin, Mayuri frowned as he voiced his thoughts, "I've already paired up the Captains who were compatible. Ukitake, Kuchiki, Kenpachi, and Hitsugaya were the compatible donors. The serum has also been prepared. You just need to inform the Captains as soon as conception is confirmed and administrate the serum to the female shinigami."

"So you would have done this if I didn't help you?"

"Pretty much." Pulling out a document, and a quill with no ink, Mayuri offered her the quill and paper.

Reading over it quickly, also knoticing it was written in blood and there were several different lines for signing, she made a small cut and started signing under Mayuri's name with her blood.

"Thank you Captain Unohana." He stood quickly and offered her a hand up.

Unohana gave him a look and rolled her eyes before she stood as he had, without taking the offered hand, "You will have the serum in my office by ten tomorrow morning, correct?"

"Yes, Yes," he waved her off and turned to leave as he through over his shoulder, "and remember Unohana, no one may know of this, even your nosey lieutenant. If you do tell, I will know, for your blood is bound to the contract until the infant is born."