********SPOILER WARNING********

This particular fanfiction will contain a series of one-shots that are related to the past and future events of my TMNT AU fanfiction series the Flirting with the Enemy tetralogy. If you are about to read on here and have not yet read the previous stories, I HIGHLY recommend going back and doing so if you wish to avoid spoilers or need to make sense of everything. Again, this series will focus upon the past and future events that canonically relate to all four of the previous fanfiction stories that include Flirting with the Enemy, Further Complications, Forward Progressions, and Summation Situation. So, if you wish to remain unspoiled… this is your last chance.

Hello everyone! Well, here it is! Flirting with the Enemy One-Shots has arrived! :D Again, just thank you all so much who have supported the Flirting with the Enemy series over the past almost 4 years! :o I seriously had NO idea that when I decided to write this for whatever reason, not even caring if anyone even read it or not because I just love to write, that it would have gained this HUGE following that has continued to grow to this day and would have such a good community of fellow TMNT fans surrounding it. :) It has been an absolute pleasure to write for you all over these years and to thank you all for being so wonderful, and because I am no where close to being bored of writing for this series of fanfics, I just really wanted to give back to all of you. As I sort of explained in the ending Author's Note of Summation Situation, even though I have my own ideas to start off these series of canonical one-shots that don't follow a specific plot like the other stories, I am giving ALL OF YOU the opportunity to give me the ideas of what you all want to see but I just couldn't include because of plot restrictions. These could be anything from any of the romances relationships, friendships, family, or action related content that was mentioned throughout the series via time-skips. But, it isn't just the past, because I also want to show content that even extends beyond Summation Situation to display character's futures. Just let me know what you all want to see in the reviews and/or PM me about it! :) Well, anyway, this first one shot will display some private one on one training between Caitlyn and Karai with Karai showing Caitlyn the ropes on being a successful kunoichi several weeks after their chat in the final chapter of Summation Situation, which was also what Liana Walker asked to see. :) Anyway, without further or do, enjoy! :D

(Caitlyn's POV)

We just got done with some light stretching and meditation before Mrs. Hamato and I kneeled in front of each other.

It's actually been really interesting ever since I started to come in on Sunday mornings so Mrs. Hamato could give me private lessons in how to be a kunoichi.

Besides, who better to teach me how to be a female ninja than another female ninja who also happens to be a master of ninjutsu and comes from an extremely long bloodline of ninjas that stretches back to feudal age Japan?

But, it's not just the combat-related stuff.

Mrs. Hamato has actually also been teaching me in other areas that don't even entirely relate to martial arts such as history and has even been helping me with refining the minimal Japanese linguistics that I learned in school and more, which will really help me out for the Japanese IV class that I'm taking my senior year when we're expected to read and write full on essays about readings and novels entirely in Japanese.

Other than learning though, I feel like I've been really starting to get to know Kaito's mother a lot more through this. She really is a great teacher and I feel very honored to have her as one of my senseis.

Anyway, aside from combat and language, the thing I've really become interested in has been history involved in ninjutsu; or more specifically, the history behind how kunoichis came into being.

Mrs. Hamato looked toward me and said, "Okay, let's go through a little review. What was the kunoichi's first intended purpose for their clans?" My answer was immediate as I replied directly from my memory, "Espionage."

She gave me a nod and said, "Correct. When clans were in desperation of achieving information on a specific warlord's next plan of attack, spying was the only way to achieve it. With these cases, a clan using their regular foot soldiers was too conspicuous, not to mention the fact that there would have been no way to get close enough to the higher ranks anyway with the feudal class system being so divided between nobility and lower classes. So, another option needed to be explored. Any ideas?"

Not wanting to seem wrong about anything and guess, I just shrugged and shook my head.

But, she just elaborated as I was preparing myself to take mental notes, "Well, as you could probably guess, this was where the first kunoichi's were used in Japanese warfare scenarios, or at least behind the scenes of the battle field."

She took a pause as I took the opportunity to asked, completely curious, "But, what kind of edge did female ninjas have over male ninjas? Like, what about kunoichis was inconspicuous to the rivals they spied on?"

I watched as Mrs. Hamato slowly stood and paced around casually before answering, "According to the Bansenshukai, which is pretty much a how-to book on ninjutsu, and what I learned through my training; kunoichis were given a knowledge of a ninjutsu-based skill set, but they originally never saw a battlefield or combat. The kunoichi, by its original definition and purpose, was to be the inconspicuous warrior. These original kunoichis, some of which included my ancestors, assumed very average yet respectable identities to attain positions in service in the households of rival warlords. This way they could be close to the enemy's highest tier of power without them even suspecting that they were conspiring against them. Think about it. Imagine being a rich warlord and trying to watch out for your rivals seeking to destroy everything you have; the last people you would expect to be doing any of those things would be the scullery maid scrubbing your floor outside the room you were strategizing with your soldiers in or the server or cook taking in your food during that meeting. Meanwhile, they were dissecting and ripping apart that warlord's plans from the inside without anyone suspecting a thing. Then for those women who didn't attain privileged service positions, they found other means to gain information and by any means necessary."

I took in what she told me, causing me to quirk up an eyebrow, before commenting, "What? You mean like… killing them?"

Mrs. Hamato let out what I could only describe as an amused chuckle and then looked at me with a facial expression that matched before responding, "Well, you aren't exactly wrong, I'll say that much. But, typically when a kunoichi was given a task to retrieve information and you'd usually still want your target alive for that. It was all about using the kunoichi's first basic principle. Be discrete. Discretion was key in every form. You had to remain unsuspicious, gain their trust. Whatever you had to do to get your enemy to tell you the information that you needed to know."

I just continued to give Mrs. Hamato a confused look as I asked, "So… what did they do to gain trust then? I mean, if something was really that important to someone, why would they just blindly tell someone they literally just met?"

I was just still trying to wrap my head around it as Mrs. Hamato continued, "Well, here's the key thing you need to understand. While female ninjas were originally not seen as highly as male ninjas, it made our caste of warriors willing to show how much they were willing to go that extra step to receive that respect. So, female ninjas became masters of mental warfare as well as physical. That is one of the main masterys of the kunoichi, to be able to mentally break down and weaken your opponent," She paused and I was trying to figure out what she was doing until I fell backward and thought my heart was going to jump out of my throat when Mrs. Hamato had the point of her juji-ken pointed directly at my face. She made eye contact with me for a brief second as she concluded, "... before you strike."

She replaced her blade inside its sheath behind her back before she held her hand out to me, which I took, as she helped me up.

"A kunoichi had to gain that trust to get close with whatever she could do. Friendships, favors, flirtation… whatever you had to do to gain your enemy's trust. I mean, sure, now there really is no need for these kinds of skills in combat and warfare much in our case, but… it's still important to recognize and know these skills to truly understand your craft."

I thought for a second before I gave her a slight nod and said, "Hai sensei."

I looked back up at her to see a slight ghost of a smirk before a slight sly expression crossed over her face before she motioned for me to come her way as she said, "Here, I want to show you something."

I tilted my head at her out of curiosity and shrugged before I decided to just follow her.

I mean, I came here to train, right?

1 hour later

I was hesitating a little again as I looked around the corner into the other side of the dojo and watched Kaito walk out of the supply closet with a large box.

I stepped back and looked at Mrs. Hamato as I said, "Are you really sure you want me to do this?"

She just gave me a nod and walked over to me as she said, "It's just a training exercise to see if you can utilize all your skills. Here, remember that kata I showed you last week?"

I tilted my head in confusion before replying, "Well, yeah, but…" "Then it shouldn't be a problem. Besides, this should be easy for you. You're comfortable with my son, right? So this is your opportunity to see how you can use that kata I taught you. Just get close, try to catch him off guard, and strike."

I knew what she was talking to me about, but it still felt wrong with what she told me to do.

"But, I don't know?" I said back, still feeling hesitant about doing this. Then Mrs. Hamato put a hand on my shoulder before saying, "Caitlyn, it's fine. Besides, this is just as much for you as it is for him. Believe me, I was the one that trained him, so… I just want to see what happens."

I was still debating whether or not I really wanted to do this.

But, eventually I just nodded as I looked back over into the other side of the dojo and saw Kaito. The equipment from the box was already laid out and Kaito was doing some stretches as I bit my lip. But I finally got a grip over myself as I took a breath in and out.

I mean sure, Mrs. Hamato told me she was okay with me doing this kind of thing in front of her to see how well I've learned from my lesson today.

At the same time though, I really don't know if I even want to do this kind of thing with Kaito knowing his mom is literally watching this whole thing.

But… what the heck? I'll try.

I closed my eyes and took another breath as I got into the right frame of mind and remembering what to stay focused on.

Be discrete.

I started walking in casually as I put a smile on my face as I kept thinking, "C'mon Caitlyn, you got this. Just stay cool."

I kept walking over and Kaito looked back at me, his usual crooked smirk growing on his face. He did a kip-up off the floor before looking at me again and walked over to me as he said, "Hey."

I just kept smiling as I shrugged and said, "Hey, just warming up?" He just smirked as we met halfway and he said, "Yeah, but I'm pretty much done." He said, still continuing to close the distance between us.

Ugh! Why does he always do this?! Seriously, Kaito is such a flirt and it comes as easy as breathing to him.

Okay, just back track.

I just regained my overall composure as I took a slight step back and reached out and grabbed his hand, still trying to ignore the fact that Kaito's mom was watching this whole thing.

"Well, maybe since you're warmed up... You can help me with something?" I allude as I glance down, still trying to hold myself together to not seem suspicious. Kaito got closer to me, that flirty and sly smirk continuing to ingrain into his expression, before responding in a matching tone, "Oh, really? Like what?"

I tried to subtly glance at his feet before slowly looking back up at Kaito, still trying to hide my real thoughts, as I said, "Well…"

I acted as quickly as possible as I did a sweep of the leg and knocked Kaito's legs out from under him, twisted his arm that I was holding behind his back, and finally waited until he land flat on his stomach before pinning him there with my foot.

I was almost frozen in shock that I was actually able to pull that off…. AND ON KAITO!

I looked up and saw Kaito's face in the full length row of wall mirrors in the room. He looked almost paralyzed in shock and confusion by what just happened.

But, I was feeling that exact same way, but for different reasons.

I was still trying to process what just happened until I heard, "Not bad." I watched as Mrs. Hamato gave me an approving expression as she made her way into the room.

I just held my place as I was about to respond, but Kaito beat me to it as he said, sounding entirely completely confused about what was happening as he said, "Mother?"

But, Mrs. Hamato just kept looking at me as she commented, "Your form was actually really good on that. But, I think with a little more…" "What's going on in here?"

I whipped my head to the side to see a very confused Mr. Hamato standing there and looking at the situation, well specifically looking at me pinning his son in a submission hold on the floor and seeing Kaito looking beyond confused and shocked.

Which is understandable considering that is so unlike Kaito's calm, cool, and collected persona.

Finally I snapped out of it as I let go of Kaito and helped him get up.

But, Mrs. Hamato just kept up an almost casual expression as she said, "What does it look like, Leo? I'm teaching."

"Mother, what was that for?!" Kaito said, wondering why Mrs. Hamato used him in one of my training exercises without telling him.

"Because I wanted to see how both of you would do in this situation." Mrs. Hamato explains to Kaito, who still looked beyond confused.

"What did this have to do with me?!" Kaito said, still looking… wait… was Kaito... embarrassed? I mean, I knew he wasn't embarrassed because I took him down. I think it was more because I was able to catch him completely off guard when he wasn't expecting it, considering I've never pulled anything like this before.

But, weirdly… I felt kind of… proud of myself.

That and I also felt kind of proud because Mrs. Hamato even told me that I did a pretty good job with this training exercise.

"Kaito, remember what I always told you during training in any situation?" His mother said, putting herself right in front of Kaito and crossing her arms.

I watched as Kaito thought back until he finally hung his head slightly, still looking slightly embarrassed, as he let out a sigh and admitted, "Always expect the unexpected."

Mrs. Hamato gave him a nod before putting a hand on his left shoulder and saying, "That's why I did this. You never know what's going to happen in combat and this was a test of vigilance. Next time, just be more self-aware. Understand?"

Kaito gave a nod in understanding as he said, sounding respectful and still retaining a slight embarrassment, "Yes, mother."

At that moment, Kaito glanced at me and I think he saw the apologetic look I was giving him, but I was surprised to see him give me a slight smirk and nod, almost as if to say that what I did was okay and there weren't any hard feelings.

Actually, and I could be totally wrong, but the way Kaito was looking at me right now… he actually looked pretty impressed.

I gave him a slight smile and an appreciative nod back before I was taken by surprise when Mrs. Hamato put a hand between my shoulder blades and then looked to Mr. Hamato and Kaito before saying, "Now, if you'll excuse us. My student and I have a little more training to do."

With that she started to lead me back over to the other room with her as we left Mr. Hamato and Kaito back in the room and both of them still looking at both of us, but… there was some intrigue to their expressions.

I would've kept looking back at them until we passed through the threshold of the door and I heard, "You did well back there, Caitlyn. I know I don't say things like this as often as I probably should. But… You're a very good martial artist, you're a fast learner and… I know you'll be a good kunoichi." I was almost in shock by what Mrs. Hamato just said to me, mostly because that was probably the nicest thing she's ever said to me… probably ever.

But I slowly couldn't stop myself from smiling as I said, really wanting to show how much I appreciated her compliment, "Thank you, ma'am."

Then I almost could've sworn I saw her actually give an actual full smile for a split second before it decreased into her usual slightly sly smirk as she walked in front of me and crossed her arms again as she said, "Well, ready to continue training?"

I gave her a smile back as I gave her a slight bow in respect and understanding before getting into an attack stance, ready to continue.

({No POV})

Leonardo and Kaito were still in the other room, and still in a slight state of deep thought at everything that just happened.

Eventually, Kaito ran a hand through his hair and let out a long sigh as Leonardo noticed his son's state and asked, "Is something going on?"

Kaito immediately looked toward his father and replied, "Oh, no, it's just… I can't believe she took me down that easily." He was still showing how surprised he was that Caitlyn was able to catch him completely off guard and take him down with almost no fight at all.

Leonardo gave his son a slight sympathetic yet understanding grin as he said, "Don't worry, you'll get used to it."

Kaito gave his father a slight look, but he knew that his father knew what was going on in his head right now as much as he did himself, if not more.

With that Leonardo gave his son a pat on the back before going into the supply closet.

Kaito just stood their for a moment before making his way over to the doorway leading into the other room. He stealthily peered into the room to see his mother leading Caitlyn in another training exercise, until his line of sight settled on Caitlyn.

He kept watching her go through her katas as crooked yet slightly genuine smile crossed over his expression.

I seriously hope you liked this interaction between Karai and Caitlyn, with a confused Leo and Kaito getting dragged into it toward the end. Haha. I just thought it would be cool to kind of create this relationship between them to be this kind of 'Caitlyn being Karai's protégé of sorts'. Even if Leo and Kaito might possibly have the created a monster thought in the back of their mind (haha), even though it is outweighed by them finally being relieved to have the whole dojo being on good terms. Again, if there was anything you all wanted to see that wasn't able to be done in any of the Flirting with the Enemy tetralogy that you wanted to see, then please tell me in the reviews or PM me. :) I'd really appreciate hearing what you guys would want to see, and also because I have only several ideas for what I want to write at this point, so ideas are TOTALLY welcome. Anyway, thank you for reading and have a Happy New Year!

Stay Classy!

Dexter1995