Naruto-The secret sage

Karin looked bothered by this but couldn't deny it. I quickly get ready and left my house after that for my sensei's office. It came as little surprise that she was waiting for me though what did come as a surprise was who else was in the office, Terumi Momo.

"Theres been a rather annoying snag in our support of the bloodline faction as the normal middleman was killed by the Mizukage's faction and the final battle for the village is fast approaching. You were chosen by name to lend aid to the faction as the new middleman and participate in the slaying of the Mizukage Yagura in a supportive role. All undercover of course." My sensei said seriously without wasting any time.

"What exactly are the parameters for this mission?" I asked seriously.

It was from the sound of it a very important mission and one I was uniquely suited for as both one of the most skilled medical shinobi alive as well as in terms of power and jutsus. I could easily blend into the faceless crowds or straight up turn invisible if I wanted.-

"The first part of your mission is to pose as an escort to a merchant headed to the land of water with Terumi Momo here acting as the merchant. Once you arrive at the bloodline resistance headquarters you aren't to engage in combat unless absolutely necessary and are to serve as both a messager and medic while you are there while disguised. The skirmishes until now have not required our aid but this final battle is likely to be particularly bloody and they will need as skilled a medic as possible to prevent needless casualties." My sensei said seriously.

"I understand." I say calmly.

The mission was quite straightforward though it was obvious there was also a ploy here from the bloodline resistance. Probably to poach me or secure my bloodline through seduction. Ao had clearly not forgotten me and was in for a rude awakening when this ploy failed. My answer to the ploy was quite simple really, a mitosis clone. It was just as good as if I went in person without actually having to go myself, the catch was that the clone was sterile and could be dispelled in an instant. I even gathered a piece of intel by sending my clone, they weren't able to tell the difference between it and the real me.-

Obviously I knew that doing so was very hard without the byakugan and some testing but the key detail here was that there was a way to do it. My sensei had insisted on figuring a way out in the off chance someone learnt the technique and turned traitor. The fact that they didn't know how to do it told me that their spies didn't have fingers past a certain point. My clone techniques existence was a semipublic thing since the third Hokage had tried really hard to find others who could learn it from me but they all failed my tests, the counter technique for it however was not public.-

The actual technique to counter the technique was both simple and unique, genjutsu attack. See mitosis clones unlike shadow clones had a constant mental connection to the main body as the mind was split between the bodies. This meant that you could attack this connection if you had the right technique. It was kind of like sending a virus through a piece of spam mail. This special genjutsu only affected the main body so the clone was none the wiser until it hits the main body and exposes itself.-

The sudden shock would cause the clone to drop limp as the connection was cut as the genjutsu took over the full mind of the main body. The genjutsu was harmless otherwise as it only forced the victim to experience the world through their current bodies senses. In other words if you weren't using a clone you had nothing to fear as the genjutsu was redundant. I of course reported this intel to my sensei. Honestly speaking it didn't even matter if the resistance discovered I sent a clone as the clone was pretty much a perfect copy of me and could do almost everything I could other than make more of itself.-

As a medical support ninja I wasn't supposed to see combat at all so a mitosis clone wouldn't be any different from me personally being present. A fact I made clear when Ao with his stolen byakugan outed my clones existence.

"Where is Konoha's sincerity!? You sent a mere clone of all things!" he said angrily.

I unleashed my clones chakra and let it press everyone in the area to the ground as the air howled and the ground cracked. "This "mere" clone could slaughter everyone here like they were helpless babies. I can fulfil my duties just fine like this." I said coldly before retracting my chakra.

Any resistance to my clone being there died at that moment and in fact they tried to convince me to send the clone into the battles but I refused as my mission didn't involve combat. Besides I had made it clear that it wouldn't be good for them if I did battle as it would get out that they sought out Konoha's help to fight their battles which was NOT a good thing for a hidden village.-

They quickly came to sing my praises anyways when I went to work treating their wounded and even managed to increase their expected troop size by mending crippling injuries that their own medical ninjas couldn't fix. -

"How did you do that? What about this?"

Terumi Momo had also become an annoyingly active part of my clones day as she hung around watching me work on patients. Her genuine curiosity about the medical techniques I used and what they did made it hard for me to get rid of her. Obviously I couldn't just tell her to get lost as this was both not Konoha and she wasn't causing any issues besides trying to improve her own medical knowledge since she was also a medical ninja if only at the lowest level since she had average talent in the field. It also didn't help that the techniques the iryonin here were using was outdated as all hell.