Tsunade's POV;

I sighed and leaned my head back over the railing. Yesterday we have boarded the ship that will bring us to the Land of Water. The sky is clear and the sun is warm. Yet, I am still annoyed.

The reason was standing on the water and doing Chakra exercises with my brother. Why is Ken-kun so friendly to the Uchiha hussy? He is always helping her with her Chakra control or showing her how to better use her Chakra for her stupid fire Jutsu.

Since he became a Genin he has spent less and less time with me. I know that he can't do much about missions and scheduled training time, neither do I. But afterwards, afterwards, he could at least ignore this bitch of an Uchiha and come back home, where we can study medical Jutsu together.

Learning the ins and outs of the human body with Ken-kun were some of the best things I have ever done. It was a little embarrassing when we went over sex and human reproduction, but we are siblings AND twins. There are no secrets between us. He even told me about the seals on his body! I bet he hasn't told his teammates.

No one knows about them, only Mito-baa-san, Mom, Tobirama-Ojii and I. Not the clan, his sensei or his friend Sakumo, and especially not the Uchiha bitch. Only I know how strong Ken-kun really is and it is definitely not Chunin level.

As twins we share everything. We often slept in the same bed, bathed, played, ate and trained together. I think it was my mistake that we grew apart. It was when we were ten. I told him that it would be wrong to bathe together. He smiled and nodded, before leaving the bathroom.

It was the day I got my first period, Mom and I had the Talk. She had many really helpful tips, there was so much that was not in my books. And yet I made the mistake to ask if Kenshiro will also change when she spoke about what boys will think. I had already heard about the Super-Pervert, through the school grapevine and was disgusted.

And when Mom said that Kenshiro will also begin to think like that I got scared. I voiced my fear about Ken-kun changing into the Idiot. Not that he will behave like the Idiot, but more about the chance that my body will give him more reason to think like the Idiot. Mom may have assured me that Ken-kun won't be like that, but the flame of fear got lit.

I tried to minimise the time he can see me naked, after all, without stimuli there won't be any effects. I only realized later how much I missed him helping to clean my hair. He was always giving me a head massage while we spoke about our day, training or just stuff.

It was also there that we learned the most about medical Jutsu.

After graduation, shortly after Father's death, I noticed him looking at women. My plan failed and it was too late to get back to our time together.

I thought about the reason for my failure and rational thinking made me quickly realize why I failed. Just because I'm not giving him any stimulus does not mean that the world does too, and stimulus without an outlet was dangerous, as could be seen by Jiraiya. I tried to provide that outlet by introducing him to a few friends of mine. But he liked none of them

Now I just want to have the closeness back.

Maybe I could force the issue and sneak into a bath with him? Kiri should have a few onsens. Ken-kun would not kick me out if I ask nicely, he never declined an honest request of mine.

I looked back down, over to Ken-kun and his team. He was holding the Uchiha bitch at her waist. Seems like she 'almost' fell into the water, again. Bitch, he's hugging you because he does not want to get a TEAMMATE wet, not because he loves you. Doesn't he see that she was doing it on purpose?

Hatake Sakumo, his other teammate, was okay. Silent, but reliable and skilled. Already almost a master with the sword., and thanks to Ken-kun also fairly skilled in everything related to Chakra. He was also not an Uchiha bitch ogling my brother.

Yes, bitch, I can see you staring at my brother's ass!

At least she is acknowledging that Ken-kun looks awesome when he shows one of his new Chakra control techniques. He always comes up with new training methods for our Chakra control. Even Tobirama-Ojii is surprised by his seemingly natural disposition towards Chakra control. And a lot of Ken-kun's invention are already inside our clan library, sorted by difficulty and for future generations of Senju to read.

Not that I think that there will be many of those. Ken-kun was partially right when he asked me about the declining birth rate of us Senju. I took a deeper look into the problem and found that it wasn't that we got infertile. There were babies, yet no Shinobi babies.

Somehow a lot of the newborn children are born without the ability to mould Chakra. More and more Senju become civilians and many of those who are able to mould Chakra don't want to become Ninja. Their parents often either remember or have heard the many stories about war and the killing that comes with the job.

Hard training from early childhood should stop the problem, but we Senju give our clan members the freedom to decide for themselves, Not like the Uchiha, who force their children through gruesome training. Only for the chance, THE CHANCE, of awakening their Dojutsu. We Senju were besting the Uchiha at everything without the need for some stupid eyes.

“Come on Ariha-chan, it's not that hard. You have to focus on the soles of your feet. Maybe you should take off your sandals?” I heard Ken-kun suggesting. I gnashed my teeth in irritation, why is he calling her -chan? Just because she accidentally called him -kun?

Oh, I know about how she 'accidentally' called him -kun, he told me the day it happened. He chalked it up as getting friends with her and Sakumo. But I know that she was calling Sakumo only -kun to hide her obvious crush on my Ken-kun. No stupid Uchiha bitch is good enough for Ken-kun.

Sadly he does not seem to like the few Sarutobi or Yamanaka friends I brought over to meet him. He was polite, but I could see his disinterest. Not my fault, it's hard to find girls that were good enough and not fangirls.

Ken-kun is very well liked by most girls our age and even a few years above. I have even seen some Chunin trying to flirt with him. A 14-year-old Nara girl once tried to show off her skill and Chakra control. She told him that as a Nara she has good control, she needs it for their clan Jutsu. Ken-kun's interest in Chakra control is already well known throughout the village. She offered to help him with his control and maybe play some shogi together afterwards. I could clearly see what she was doing. Ken-kun, the oblivious loveable idiot, did not.

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She wanted to show him at our training ground and I was there when they came. And then she tried to show him the paper folding exercise. She was not bad, she could at least hold up her claim. Sadly it was a technique that Ken-kun invented a few weeks before. Her face was hilarious when Ken-kun showed her how it is done better and then gave her tips to further increase the difficulty of the exercise.

I gave her credit for not looking too stupid and then for sucking up the teachings like a sponge. That day Ken-kun could teach someone about his beloved Chakra control and she learned quite a lot. For example that Ken-kun is dense as fuck, he didn't see a single advance she made and did not react to anything flirtatious.

Well, maybe it is better for Ken-kun to be this oblivious. Or else he would have seen the Uchiha bitch's flirtatious advances long ago. Even now she was way too close to him. Almost pressing her chest into his side.

Hmpf, mine are bigger. I looked down and could see the swell of my chest. They are growing nicely. Way bigger than those of the Uchiha bitch. She only has an A-cup.

Come to think of it, maybe he doesn't like large chests. Ken-kun was never looking at my chest. He was also only giving the chest of the girls I brought over a glance, before looking into their eyes. I tried to pick the girls with the largest boobs, Jiraiya, the idiot, is always ranting about how great large chests are. I thought all boys like them big and even played a little with mine to make them bigger. It worked, I only had to find the right stimulation of hormones to increase their growth. Otherwise, I wouldn't already have a B-cup.

I can't ask Ken-kun directly, he may be dense, but he is not stupid. And I don't want him to think that I am interested in him. I am not, really, I just want him to get the best girl there is. She should be at least as good as me, not my fault that most are lacking.

His future wife should be as cool, awesome, good looking and strong as him, I can't possibly know whom he will choose. Only one thing is sure and that it definitely won't be an Uchiha! Especially not the Uchiha bitch that has now 'tripped' into Ken-kun's arms.

I stood up and walked into the ship. My interest in the sun has suddenly eroded. We had rooms with four beds each on the ship. We were also allowed to have gender separated rooms. I don't know what I would have liked less, sharing a room with Jiraiya or with the Uchiha bitch. At least the other girls don't snore as loud as Jiraiya.

However, I didn't go to my room, I rather decided to visit Orochimaru and Jiraiya. As much as it grouses me, Jiraiya and Orochimaru are somewhat my friends. The only ones on the ship. Ken-kun is my twin, he is more than a friend. They are also boys.

I opened the door without knocking. It was the room of Ken-kun, Hatake and my team, two of those are outside and the other two I have seen almost naked and not because I wanted to. Inside I found Orochimaru sitting on a chair and reading a book about Jutsu creation. Jiraiya was lazing on his bed and looking at pictures of naked women.

Both looked at me and Jiraiya hastily hid the pictures under his pillow. He knew how much I disliked his open perversion. “Tsunade-hime, did you come to share the bed with me?” Asked Jiraiya with his so called 'player-grin', it's more a lecherous grin.

“Shut up Jiraiya,” I replied and for once did not hit him, that would be counterproductive now. I sat down on Ken-kun's bed and leaned into his pillow, it smelled like him.

Orochimaru raised an eyebrow and Jiraiya lowered his raised arms, confused why I haven't hit him yet. “What can we do for you Tsunade-hime?” Asked Orochimaru. He was calling me -hime as well, but not like Jiraiya. Orochimaru was doing it because of my status as the Senju-princess. Jiraiya did it because he thought I would like him if he calls me his princess.

“I need your help Jiraiya,” I said, almost wincing at how wrong that sentence felt.

“I'll gladly help my Hime, what can I do for you? Do you need your breasts massaged? They have grown nicely. It is said that they will grow if someone touches them,” he was staring at my chest, so I pulled Ken-kun's blanket over my chest to block his view.

Then I had to suppress the need to hit him, three deep breathes were barely enough. “First, that is a myth that is said to work if done by the person you like, which you are definitely not, Jiraiya. Secondly, that wouldn't work anyway and thirdly, no.”

Orochimaru's second eyebrow rose up and Jiraiya was looking at me with a gaping mouth. His stupid little mind could not process that I haven't hit him green and blue already. He composed himself and finally realized that I honestly wanted something. He realized that it was something I really wanted and that he was the one that could give it, and simultaneously he also showed that he was more of a friend and less of a Ninja.

“Okay, what is wrong and how can I help?” He finally said. He sat up to look directly at me and for once he didn't even stare at my chest, for five seconds.

“I need you to find out if Ken-kun likes large or small chests,” I blurted out and then realized what and how I have said it.

Orochimaru's eyebrows could not rise any higher, but I saw him trying. Jiraiya was cursing my brother silently and I almost hit him for it but restrained myself.

“Why do you want to know that?” He then asked jealously, one eyelid was spasming.

“You are always loudly claiming that large breasts are the best in the world,” he muttered 'they are', but I continued. “Every girl I bring over to meet Ken-kun has the largest breasts I could find. And yet he does not give them more than a glance. He spends almost all his free time with the Uchiha bitch. And she has a small chest. Is it possible for guys to like small chests as well?” I looked at both him and Orochimaru. The latter gained a healthier colour than white when I looked at him.

“Well, it can be possible. There are guys that do like small chests more than large ones. I know, it confuses me as well," he threw his arms up. "Still, how do you think I can find out what kind of tits your brother likes? If you haven't noticed it, he does not exactly like me much,” explained Jiraiya with a small smile. He was not happy to speak about Ken-kun, but still happy. For once he was allowed to speak about his 'hobby' and not get pounded.

“That's because you are openly staring at me and are always perverse around me. Ken-kun, like a good brother or a normal human, does not like that. He himself does not have anything against you, even tries to defend you sometimes, god knows why,” I said in a deadpan tone. I then looked at Orochimaru for his opinion.

He looked increasingly uncomfortable but relented when I didn't break my stare. “I prefer a moderate chest. It has to fit the body.” So Jiraiya was wrong, could have seen that sooner. When was Jiraiya ever right with something?

I turned back to look at Jiraiya, who looked as if he does not understand what I want from him. “What?”

“Will you help me find out what kind of chest Ken-kun likes?” I asked again.

Jiraiya scratched his head and looked thoughtfully for a moment before he shrugged. “I wouldn't know how, whenever I bring the topic up he is ignoring me. That Sakumo guy does as well and the other Genin we are travelling with are strange. They stay together and avoid us.”

I tried to come up with some way for him to ask and not get ignored, it was hard, but after thinking for a few minutes I found a possible way. “I might know a way. There are sure to be onsen in Kiri, you and Orochimaru-kun can invite Ken-kun and Sakumo to go. It is less strange if you two go and invite his teammate as well. Then, once you are all inside the water, you can ask. I heard that men talk about this stuff when they are together and in an onsen. Maybe Orochimaru-kun has to answer first, his involvement will force the other two to answer as well.”

Orochimaru has finally lost the fight and stared at me open-mouthed. Jiraiya was nodding along, agreeing to my suggestion. “That might work, yes, bathing together forms bonds and the warm water makes you relax. And if the Bastard plays along it won't look as if I am up to my normal stuff.”

“But I don't want to!” Disagreed Orochimaru. I gave him a hard, long stare that was promising pain if he does not do as I wanted to. He managed to hold the stare for three seconds before he broke and agreed with a silent okay.

I nodded, pleased with myself. It took time to train them and is still a work in progress. “Thanks, guys, I'll owe you one,” I thanked them happily and laid down. Ken-kun's bed is comfortable and his sent is comforting.

“You can show me your tits. I am always ready if your brother doesn't like yours, it's his loss,” said Jiraiya. Now, if I only could beat that out of Jiraiya, it would be the day of my decade.

“Don't stress it, Idiot, I might not have hit you, but I have my limits. Now shut up and let me sleep,” I warned and closed my eyes.

Later I got woken up by Ken-kun and Hatake-san coming inside. They tried to stay silent but as a Ninja, I always have a light sleep. I played asleep and was silently happy when Ken-kun simply laid next to me. I hugged him closer and he returned my hug.

I drifted back to sleep, knowing that the Uchiha bitch could not do things like this.