Fuka walked into the Hokage's Tower and quickly made her way the Hokage's office where Hiruzen was sitting behind his desk talking with Kakashi. The duo's conversation came to end when Fuka walked in and bowed her head to the Hokage. She then formally said, "Jonin Fuka Asakawa reporting in from testing prospective genin Team 10. Genin hopefuls Naruto Uzumaki, Sakura Hurano, and Kiba Inuzuka passed the previously submitted test plan for Team 10 by passing the first test. The makeup test was not needed. I hereby declare their application into the Shinobi Forces accepted and their shinobi profiles to be on active status."

Hiruzen nodded his head and said, "Understood Jonin Asakawa. As of this moment, Team 10 is now an official team within the regular Shinobi Forces. You are Team 10's commander and will remain as such until either all three genins on your team become chunin or your services are needed elsewhere on a more permanent basis. Their training is in your hands their Jonin Instructor. May you insure through your training that they become strong members of the Shinobi Forces."

With the ritualized activation of a new genin team out of the way, Fuka spoke. "My team's training will begin tomorrow following the basic training plan I submitted with my request to command a genin team. Modifications to the plan will be made as the trio's progress requires and will be filed in my monthly reports. Are there any further instructions or inquires you have for my team? If not, I would like to leave so I can file my initial report on the team."

A pained look appeared on Hiruzen's face for a split second before he hardened behind his Hokage face. He then said, "There is one extra order that you'll have to follow Jonin Asakawa if it becomes necessary. You are hereby removed from the general Suzaku Directive and placed on permanent standby for a specific Suzaku Directive with regards to genin Naruto Uzumaki. This change in your directives will remain in effect until you no longer qualify for the Suzaku Directive, you are reassigned to another team, Naruto Uzumaki is reassigned to another team, or it is no longer necessary for Naruto Uzumaki to be placed under the Suzaku Directive. Is that understood?"

Fuka gave a quick nod of her head showing her understanding. She had been expecting this modification in her Suzaku Directive ever since she found out that Naruto would be one of her potential students. Anything else wouldn't make since given that the team had one confirmed carrier of a useful kekkei genkai and a kunoichi currently under that directive. The thought of the order didn't bother Fuka because the directive would only activate if she massively screwed up training Team 10 allowing them to get into danger. So it wouldn't be an issue as long as she did her job like she was supposed to do.

Just as Fuka was about to ask if there was anything more, Hiruzen dropped the bomb on her. "Also, there will be a modification to the Suzaku Directive. Genin Sakura Hurano is to be given the training necessary to act as your backup in regards to Naruto Uzumaki's situation with the Suzaku Directive once she meets the minimum necessary physical requirements for the directive's purpose."

Kakashi looked at Hiruzen with a look of surprise at the hokage's declaration. However, both men were pulled to look at Fuka who was barely containing her killing intent. "I formally protest this sir! The Suzaku Directive is limited to 16 year old chunin rank kunoichis or higher for extremely valid reasons. Forcing a 12, almost 13 year old genin to fulfill the directive is just asking for problems."

Personally, Hiruzen agreed with Fuka and hoped that this addition was never needed. However, planning for a worst case scenario was part of the burdens of leadership and he was old friends with this particular burden. "Your protest has been noted and dismissed, Jonin Asakawa. My only advice for you is to insure your training is enough that the Suzaku Directive does not need to go into effect. If things do take an unexpected turn for the worse, insure that you are in a position to fulfill the directive so that your genin student does not have to do so in your place."

The hokage allowed part of his disgust and weariness to show on his face as his voice softens. "Off the record Fuka, I really don't want to force Sakura into fulfilling the Suzaku Directive. She's far too young to be forced into such a position and fulfilling the directive at her age has a strong possibility of killing her career as an active ninja. Sadly, as the Hokage I need to weigh the needs of Konoha and the Land of Fire in light of Naruto falling without a replacement. We need to keep the Uzumaki around in order to keep the Kyuubi contained. If there isn't another Uzumaki available to seal the Kyuubi into when Naruto dies then we might as well start the evacuation of Konoha because once it reforms, the Kyuubi will attack us. Jiraiya might, just might, have the abilities to seal the beast again. However, without an Uzumaki we won't have anywhere safe to seal the beast."

A hard look crossed Fuka's magnificent face as she spoke. "I'll inform Sakura because it's my orders sir. However, I will insure that such measures do not have to be taken!" With that said, the jonin vanished in a swirl of leaves.

Kakashi turned to look at the worn hokage and stated, "You should have let me train Naruto like I requested. I would have insured that he would be strong enough to not need such considerations sir. We didn't have to have such plans for Kushina or Mito." Ever since Obito's betrayal had been revealed, Kakashi had stopped being so carefree like he had been. The habits that Kakashi had picked up in honor of his onetime friend had been dropped. The famed jonin hadn't reverted to his by the book attitude that he had as a child. However, there was an edge and hardness about Kakashi that he hadn't shown before the Uchiha Purge had happened.

Hiruzen looked over at Kakashi and felt a bit of sorrow for the young man. Everyone who knew Kakashi knew that the he blamed himself for Obito's betrayal. Kakashi was convinced that Obito's betrayal would never have happened if he had been able to rescue his friend all those years ago on that fateful mission. It didn't matter that the inquiry board had ruled that there was nothing within Kakashi abilities to do to help Obito after reviewing the silver haired jonin's memories of the incident. Even the second inquiry board that had been set up after Obito's reveal as the betrayer exonerated Kakashi. That inquiry board had ruled that Obito's survival was due to an unknown third party who had for some reason saved Obito through an unknown jutsu bringing him to facilities that could insure his survival and turn him against Konoha.

The Hokage took a puff of his pipe and then quipped back to his subordinate. "In case it somehow slipped your memory Kakashi, Kushina and Mito were both women. Trying to make plans to continue their line if they fell was pointless because they didn't have the necessary equipment to impregnate a kunoichi. Naruto can so it would be stupid to not plan for such a situation given the stakes involved. I'm dearly hoping that such contingencies will not be needed; and if for some reason it is necessary that Fuka can handle the task instead of Sakura. Planning for the worse and hoping for the best is a burden of my position."

Hiruzen then gave Kakashi a sad smile as he continued on. "I know you wanted to teach Naruto to try and repay Minato. But, you need to take a step back and look at everything objectively. Naruto knows everything Minato did thanks to Aima Sophia so how much can you really teach him given all of the help and advice Minato gave you to turn you into the ninja you are today? You have many more jutsus now than when Minato was alive, but the core of your skills and outlook is still the same. Fuka's knowledge of jutsus is almost as vast as your own and she has a number of skills related to infiltration and espionage that neither you nor anyone in Naruto's ancestral memories has. She can help Naruto unlock the full abilities resting in his blood and help him to add new ones to pass on."

"On the other hand, you are a very good possible teacher for your own students and possibly the best one we have for young Sasuke. That young boy has great promise as a ninja, but he can easily be led down a dark path in his quest to restore the Uchiha Clan's honor. You're also the only one who can teach Sasuke how to use the Sharingan if he activates his kekkei genkai since Itachi doesn't have enough time to fully train his brother and the two of them are effectively ostracized from the rest of their clan. I'm also hoping that your shared pasts of dealing with parental decisions that caused you both a great deal of problems will help you reach Sasuke even though there is a world of difference between the two incidents."

Kakashi had read the full report on his potential students and understood Hiruzen's decisions. His solid skills at tracking would help Hinata who had been swapped into the traditional position of the top kunoichi for team balancing. Sakura was the top kunoichi of the year for the Academy and having her on a team with Sasuke and Shikamaru created a major deficiency for said team in terms of tracking and detection. It was also hoped by some that Kakashi would be able to get Shikamaru to shake off his lazy nature just like Kakashi had gotten rid of his habitual lateness that had previously caused him to constantly court demotion. Kakashi doubted that though as it was very unlikely that Shikamaru had a dead friend who would turn out to be alive and a massive traitor. His prior experiences working with Hyugas and Naras made him a good fit for training Hinata and Shikamaru in addition to the skills he offered as a sensei.

The silver haired jonin let out a sigh knowing that Hiruzen was correct that he was a better fit as Sasuke's teacher rather than as Naruto's. Still didn't change the fact that Kakashi wanted to teach Naruto. It had been something he had been hoping to have for years as a way to both connect with Naruto and to repay Minato for everything the man had done for him. Kakashi had been too young and his career took him out of the village too often to make a strong case for him to adopt Naruto after Minato and Kushina died. The Shinobi Orphan's Care Complex was able to provide Naruto with a safer and more stable environment to grow up in than Kakashi ever could. Besides, it would have drawn more attention to Naruto from foreign spies if the Yondaime's only surviving student took in a newborn baby.

Kakashi bowed his head to Hiruzen and said, "Well I must be off now. I think I've waited long enough to meet my team in order to test their patience. I'll see you when it's time for me to report on my prospective team's status."

As Kakashi was arriving at the Ninja Academy Kiba, Sakura, and Naruto were leaving. Naruto had invited both teammates out for a small celebratory meal and they both had accepted. Kiba spoke as the trio of new genin reached the outer grounds of the Academy. "Hey Naruto, what was that stuff that sensei was saying about your kekkei genkai? She was saying something about you having the memories of a bunch of ninjas in your head?"

Naruto stopped in his tracks, looked around to check out his surroundings, and them motioned for Sakura and Kiba to follow him to a more secluded area on the edge of the Academy. Once they were alone Naruto answered back. "Aima Sophia does more than simply give me very good recall of memories like is known around Konoha. The specifics of my kekkei genkai were kept secret while I was at the Academy because it was deemed that I'd become too big of a risk for becoming a kidnapping target if Aima Sophia's abilities were too widely known before I had enough skill to defend myself. Since I'm now a genin, Aima Sophia's abilities are under less secrecy. However, the Hokage doesn't want my kekkei genkai advertised until I've become a chunin. At the moment, Aima Sophia's full abilities are a Class E secret. Is that understood?"

Both of Naruto's teammates nodded their heads. The instructors at the Academy had taught all potential ninjas about the odd dichotomy ninjas had between the need to keep their abilities secret to accomplish missions and the need to advertise their abilities in order to get missions. This had led to a discussion on the unofficial Class E secret. This was a something that, while technically not hidden from the public and thus not an official military secret, was regarded as something that was better talked about away from listening ears. There was no official penalty for carelessly talking about anything in the unofficial Class E category. However, ninjas who couldn't keep a Class E secret tended to get the worst and least glamorous assignments way more that they should by pure random chance.

The young shinobi then explained his kekkei genkai. "Aima Sophia literally means blood wisdom and that's a good description of what it does. My kekkei genkai records all of the bearer's memories and passes them on to the person's children. It also creates a copy of the child's other parent's memories and passes those along. These inherited memories get updated each time a child touches their parents. Inherited memories are easy to access once the kekkei genkai fully activates like it did for me." Naruto paused for a second to point to his blue within blue eyes. "There is perfect recall with memories accessed via Aima Sophia. These memories also cannot be removed via any known jutsu since they are recorded genetically along with being recorded in my brain. With practice, one can also access their own memories with the same clarity as their inherited memories."

Kiba blinked his eyes and then pointed at Naruto with a bit of outrage. "That's just bullshit! You mean to tell me that I busted my ass trying to study all those years in the Academy while you got to coast along on your parents' memories? I suppose you also have dozens of high ranking jutsus at your fingertips that you can pull off whenever you want while I have to beg to learn a measly C rank jutsu from mom."

Naruto shook his head, "I still had to study at the Academy because some things changed in the lessons since my parents went to school or were even alive Kiba. I'll admit I know quite a lot of powerful jutsus thanks to my ancestors. However, I can't use most of them because I haven't put in the practice necessary to use them as I'm just a 12 year old. My body wouldn't be able to handle the stress of those jutsus right now. Besides, Aima Sophia does have its downsides since I have all of my parents and my forbearers with their partners' memories down the line that Aima Sophia has been passed down while being unable to remove any memory."

Kiba gave Naruto a quizzical look and said, "And just how is that a downside Naruto?"

In a deadpan manner, Naruto answered his stubbornly thick teammate. "I have inherited memories that I would rather not have. For example, my introduction to Sex Ed was me accidentally calling up my parents memories of the night I was conceived and recalling both mom and dad's memories of that night. Those memories were in perfect detail."

Sakura cut in at this point. "I think it's safe to say that Naruto paid a serious price for any advantages his kekkei genkai gave him in school Kiba." In the back of Sakura's mind, her inner self was much more vocal on the subject. Her inner self was wondering why Naruto didn't kill himself after living through those memories. There were some things that were just worse than death.

Kiba nodded his head in agreement shivering at the thought of experiencing something like that. He then stated, "I take back what I said Naruto. But on the plus side, does this mean you know who your folks were?"

Naruto nodded his head and then said, "Yes I do. However, my precise lineage is currently classified as a Class A secret until I become at least a chunin. The Hokage feels my lineage plus my kekkei genkai would once again make me a prime kidnapping target for enemies looking to gain intelligence on Konoha. Once I'm a chunin, my skills should be enough to deter overt kidnapping attempts." Left unsaid was the fact that he'd still have to be on guard for enemy kunoichi's trying to seduce or trick him into fathering a child for them.

Sakura then shifted the conversation by asking, "So which restaurant are we going to go to in order to celebrate our officially becoming a genin team? We never decided where we are going." This quickly started an animated debate among the trio over where they were going to eat. All members of the team argued for their favorite restaurant and finally agreed to go to a place that served all of their favorite foods.

Team training started at 8 am just like Fuka said it would. Fuka hit the ground running by giving her students five pound wrist weights and ten pound leg weights. She had a similar, although much heavier, set of weights that she put on her wrists and legs as well. There was also a small weight set up for Akamaru to wear. Fuka then proceeded to lead the team through a two hour long aerobic exercise marathon switching between laps around the training ground, jumping jacks, sit-ups, pushups, and other cardio exercises. She refused to let the team stop or slow down as she mixed things up to exercise every muscle. Any attempts to use chakra to enhance or maintain one's performance was quickly spotted and Fuka soon threatened to add fines to anyone who 'cheated' on this portion of the exercise.

The warm up exercise ended at 10 am and Fuka gave her students a five minute rest period to have some water. Sakura was sitting on the ground greedily drinking from her water canteen. Kiba was panting a bit as he had some water. Naruto wiped away some of his sweat and had a few sips of his water. Sakura wasn't used to doing exercises at this intensity and length with weights. Kiba was in better physical condition than Sakura and he was used to lugging around some extra weight from Akamaru. His nin dog wasn't as heavy as his weights, but the practice helped. Naruto just needed some water and then he was as good as new with a little extra body odor thrown in.

After five minute break, Fuka put the trio through an hour long practice of their taijutsu forms. Fuka was standing opposite of her students so that she could observe their practice while she did her own and offer any critiques when needed. After the taijutsu practice there was a half hour of shuriken and kunai throwing with Fuka running the trio through speed, accuracy, and distance drills. Once the ranged weaponry practice was over, the trio had to do close quarter weapons practice. During this period Kiba and Sakura used their kunais like combat knives while Naruto was allowed to practice with his ninjato. However, Fuka did inform Naruto that he would need to train at least two days a week with a plain kunai since he wouldn't always have access to a sword while on missions.

Noon came and Fuka said, "Alright students. It is time to eat. Take off your weights and head over to that tree so we can eat." She removed her weights and placed them on the ground before heading to the tree she had pointed at. Sakura and Naruto quickly joined Fuka with Kiba taking a little longer because he had to take Akamaru's weights off as well. Fuka sat with her back to the trunk of the tree with her students sitting before her as all of them ate.

Once Kiba had eaten half of his lunch, he asked a question. "Hey sensei? Why did you have us take the weights off? I thought that with weights you were supposed to wear them all the time for maximum effect."

Fuka shook her head. "That is a foolish notion Kiba started by a few storytellers who only have half of the understanding of weight training. Your body needs to rest from the weights. If you just started to use the weights all of the time your muscles and bones would eventually start to break down. Now, you can condition yourself to use weights for a much longer period of time. The Maito clan is rather well known in taijutsu circles for their conditioning to wear heavy weights often. However, such conditioning takes months to do and has to be handled very carefully to insure that the person undergoing conditioning doesn't hurt themselves."

"Even with the conditioning, it's stupid for someone to wear weights 24/7 disregarding the potential health problems. We use weights to enhance our abilities. Someone who fights with their weights on is not fighting at their full potential because the weight is hindering them. The extra weight also messes up your reaction times as you no doubt noticed with your drop in accuracy during practice today. If you don't train without the weights as well your reaction time and general fighting ability will drop because your body won't know how to react properly without the weight anymore. This means a hypothetical ninja who trains with weights 24/7 cannot fully utilize their full power because their training has gotten them just used to fighting with their weights which are a handicap in a fight. Such a stupid ninja is nothing more than a corpse that hasn't been buried yet."

"The weights will be part of our training because they help you if you know how to go about using them properly. What we did this morning will be our regular morning routine. On practice days, you will use the weights the entire time since we have afternoon training without the weights. On mission days, you will use the weights for half of the session switching between the general physical exercise and the more specific exercises."

Sakura let out a sight of exhaustion and muttered, "I knew that being a genin would require training like this I would have started using weights back in the Academy."

Naruto shook his head and replied, "No you wouldn't have Sakura. Weights like we used today are forbidden to be sold to any civilian under the age of 15 due to a general health regulation from the Daimyo's court. If you somehow got an older relative to buy you a pair the pair would have been confiscated by the Academy Instructors if they caught you using them. There would have been simply too great of a chance of you hurting yourself or causing problems for your future physical development for you to use them while you were the Academy since you were too young. Even now, we're only allowed to use weights because of two reasons. First, we've proven to have sufficient physical strength to use them safely thanks to passing the Genin physical test. Second, we are using these weights under the supervision of a trained superior who knows how to use them"

Fuka nodded her head and continued from what Naruto had said, "Naruto here is perfectly correct. I will be taking the training weights home with me after all of our training sessions. I trust you three as well as any jonin can trust their new genin students. However, I also know just how tempting it can be for a genin to try and push their training as far as possible. I did that myself a few times back when I was a genin." Fuka then pulled out a tea set and poured herself a cup while offering everyone a cup of tea as well.

Once lunch was over the trio of genin expected to be thrown into another round of exercise. However, Fuka surprised them by telling them to leave the weights off and sit down for a lecture. The jonin stood in front of her students and calmly explained. "There is a certain amount of theoretical knowledge that all genin need to know in order to be successful as shinobi. This is in addition to what you are taught back in the Academy. Also, shinobi need to know how to apply what they have learned to come up with a plan of action. Your previous senseis often repeated that your mind is the greatest weapon you can have and they were not trying to pad their lecture time by saying this. We will go over these theoretical aspects after lunch on training days so that you can continue to learn while your bodies rest a bit more from the morning exercise."

"For today, our lecture will be on teamwork with a focus on coordinating a team's actions in combat. It is one thing for you to say that you need to work together and it is a different thing to actually work together. Part of working together is practicing together or going on missions together. This gives you the experience to anticipate each others actions and to know just how capable every member of the team is at different tasks. It won't be your responsibility for a while, but you must keep in mind who is good at what when it comes time to select tasks. A mission can be lost if say a heavy hitter is assigned as a scout even through his or her tracking skills are poor. Teams who have trained or worked together will know will know who is good at what."

"Sometimes, teams have to be put together quickly for one reason or another. Why this happens isn't important for our lecture now. What is important is how to work together in the best possible manner so that your lack of experience working or training together doesn't create too big of a liability. Later in your careers, you might team up with a shinobi who had developed a reputation for a certain style of fighting so you will not go into the situation blind as to their abilities. This will likely not happen until you are chunin or jonins since only the strongest ninjas develop a reputation for a certain style of fighting and are not quickly cut down because of it."

"At your current level, one of the quickest ways to learn how a new teammate would fight is to look at their known background. Ninjas from shinobi clans typically favor a certain way of fighting. Some clans are well known like the Inuzuka clan that Kiba is from. Anyone working with or fighting an Inuzuka would expect most of the Inuzuka's fighting style to revolve around their dogs and various jutsus to augment close range fighting. Other clans are less well known such as the Uzumaki clan which has faded from popular knowledge due to the fall of Uzu nearly two generations ago. This kind of situation makes it harder for you to know immediately what an ally is likely to excel in, but it does offer the advantage of your enemies being less likely to know as well. Shinobi from civilian backgrounds are harder to get information this way since they are blank tablets as far as family fighting expectations. In the case of someone like Sakura, the best source of quick information is to find out who trained them. If you know who their primary teacher was, you can get an idea in what they've been trained in."

"However, the best way for several shinobi who haven't worked together before to build teamwork rapidly for an immediate mission is to have a short discussion about their abilities and stick to the standard formations. The standard formations you were taught about in the Academy and the more advanced ones you will be taught when you progress in rank are such because they work. They may not work as well as a specialized formation made by a group that knows each other. But, everyone will know what to do and what to expect which is a key part of teamwork on the battlefield. Briefing each other on your abilities will let every member of the team know what to generally expect. You don't have to list every jutsu and what they all do in detail. That would take way too much time. However, you don't want your temporary teammates to be killed because a jutsu you used seemed to come out of left field and surprised them giving an enemy an opening."

Fuka paused for a moment to let what she had said sink in. After a moment passed she saw Sakura get ready to speak up. The jonin held out her hand to silence the incoming questions before she started to speak again. "I will give you all an example of explaining your abilities since none of you know what I currently can do. I specialize in infiltration and rapid assaults on enemy targets. My ninjutsu abilities are varied covering all five of the basic elements. In combat, I specialize in using ninjutsu at range while using taijutsu up close to compliment some of my close range jutsus. I often use a close range jutsu called Shikei Seppun to drain an enemy's chakra and acquire information about their jutsus. Additionally, I often combo this jutsu with Shiki Tenshin which allows me to fight using special clones known as Norowa re Shitai Bunshins while my real body is safely protected inside a special seal. This makes it look like I can take mortal wounds without being killed greatly unnerving any enemy. Now, do you have any questions?"

Sakura spoke first. "Why is one of your jutsus known as the cursed corpse clone?"

Fuka's face hardened as she explained, "I won't go into too much detail about the creation of the Norowa re Shitai Bunshins unless I actually teach any of you that hijutsu and that is not likely to happen. All I will say is that I need to prepare the Norowa re Shitai Bunshins ahead of time in order to use them and that I need to use animal parts in part of the process of creating the bunshin. I, like my sensei line that has passed down this jutsu, use parts of pigs to make these bunshin. However, back when this jutsu was created, one of the original inventors of the jutsu became infamous for using the corpses of her victims to create new bunshins. Hence the name of the jutsu."

Fuka was not going to say anything more about her jutsus than what she said unless she was taking someone on as an apprentice beyond that of a regular genin student. One of her fellow students to the master that taught her these hijutsus had talked to Orochimaru about the Norowa re Shitai bunshin in detail. Those talks were supposed to be a key piece in that Fushi Tensei jutsu Orochimaru had been working on developing when he escaped Konoha. That Orochimaru was trying to develop a jutsu to transfer his soul into another person was an A rank secret at the moment.

The sensei of Team 10 only knew this secret because she was the only living person at the time with knowledge of the Norowa re Shitai and several other jutsus that Orochimaru was using as the base to start developing the Fushi Tensei. She had been called in as the closest thing Konoha had to an expert to examine Orochimaru's notes on the Fushi Tensei. What she saw made her sick that her hijutsus were being perverted in such a manner. Fuka was also concerned because from what she could see, Orochimaru might actually be on track to creating a jutsu that would transfer his soul.

Fuka refocused the conversation on teamwork and continued her lecture for another twenty minutes. Once the lecture was over, she proceeded to teach her students the D rank jutsu Doton: Shinjuu Zanshu. This ninjutsu would be very useful to help her students attack enemies and would serve as a base for many more advanced jutsus that involved Doton. This would be the first in a cycle of D rank jutsu from each of the five primary elements that Fuka planned to try and teach her students before the first month was up. All three genins could perform the jutsu by the time training was called for the day. However, only Naruto was able to do it fast enough to be useful in a fight and even that wasn't good enough for Fuka to say Naruto would be able to practice another jutsu.

Author's note: Norowa re Shitai Bunshin was one I made up since the wiki never explained how Fuka had multiple bodies. It only mentioned that she needed multiple bodies to store the chakra she took with the Shiki Tenshin and that she possessed them with her hair. I used a free online English to romaji translator to come up with the name because I didn't want to break the naming convention of the story. I will use the same translator as much as possible to help with the consistency. Any further original jutsus I create will have their English name dropped in the story soon as I can so you get an idea what on earth my characters are talking about.

On the Suzaku Directive, this is one of my own creations for this story and will no doubt draw some heat from some people. However, having a protocol in place to insure the survival of a useful bloodline makes sense when you consider that in the Naruto world ninjas are biological super weapons. Look at canon Naruto with the Uzumakis and the Kyuubi. The Biju are that setting's equivalent of a nuclear bomb and Konoha had to go to an allied village to get someone to seal their Biju into. Old allies or not, one does not put their most powerful potentially city leveling weapon in the hands of a foreign national unless they don't have another option. When Minato needs to reseal the Kyuubi after Obito unseals Kurama the only two valid options in his mind is either Kushina or Naruto. This isn't out of some sense of nobility, this is the supreme military leader of Konoha and a well renown genius assessing the situation and determining that the only choices on where to store a WMD is either a dying woman or an hour old defenseless baby. Sealing the Kyuubi in Kushina as she's dying potentially costs them the kyuubi as someone else could seal it when it reforms while sealing the Kyuubi into Naruto takes Konoha's strongest strategic asset out of use for at least a decade if not longer for Naruto become a ninja. Neither move is a wise or strategically sound one if there was any other viable alternative.

Do Fuka and Hiruzen want Fuka to carry Naruto's child conceived as he's dying? Of course they don't! Do they want Sakura to get stuck with this task? That's an even stronger no. However, a realist would know that there is a possibility of Naruto getting killed while out on a mission. The Kyuubi will reform after a couple of years and then, considering what the biju did the last time it was free, it isn't too hard to imagine Kurama coming to wipe Konoha off the map. Looking at the Naruto series, it becomes a reasonable deduction that only the Uzumakis can contain the Kyuubi. Logically, only Naruto posthumous child would be able to contain the kyuubi in this scenario which is what Hiruzen is planning for with his changes to the Suzaku Directive for Team 10. Everyone's lives in Konoha are on the line if this situation comes up which is why Hiruzen is throwing Sakura in as extra insurance. It would likely destroy Sakura's career having to have a child this early along with the traumatic effects of losing Naruto and likely Fuka as well for her to get stuck with this duty. But, the needs of one person's career loses out to the needs of thousands of lives to keep living in this situation.

For those of you who are still confused about how much of Naruto's bloodline is known in the village, this following note is for you. The general population knows that Naruto's kekkei genkai involves preservation of memories and assumes that the memories preserved are just his. After all, his memories were the key piece of evidence leading to the downfall of the Uchiha which can't be hidden. Those people with a reason to know are aware of the full abilities of Aima Sophia. This is an open secret that is currently kept quiet to reduce the chance of enemy shinobis trying to capture Naruto for his kekkei genkai. Only a subset of those who know the full abilities of Aima Sophia are aware of Naruto's exact lineage. That is being kept as a secret for the time being because it is the knowledge Naruto has inherited from them that is such a big security risk. The genin with the memories of several kages is far more tempting as a kidnaping target than the genin with the memories of an unknown lineage.