Disclaimer: Almost all Jutsus mentioned in the below story can be found on the Naruto wiki. The ones which are custom are mentioned below:-
1) Jyuuken Hyouton Style: Chakra enhanced Thousand Needles of Death: Just like the standard Thousand Flying Water Needles of Death, the needles are instead made of ice and all aim at the 'Eight Gates' tenketsu in groups of One hundred and twenty five.
2) Yuki Style: Hydro-Cryo kenesis: The combination of Hydrokenesis and Cryokenesis.
3) Jyuuken enhanced Chakra Absorption: Haku stabs the Nuibari onto the topmost tenketsu on the enemy's body and impales him with the Executioner's Blade on the tenketsu points along the spinal cord of the enemy. He then freezes the swords with his ice style and pulls them out at the same time pulling out the entire chakra in the enemy's body stuck and frozen to the swords. He then absorbs the chakra to use it for auto-healing. Although using this technique exerts a lot of strain on his body restricting him to move freely and use his own chakra for quite some time.
"YOU WANT HIM TO BE A PART OF THE LEAF? WHAT HAS GOTTEN INTO YOU HIASHI-SAMA? WE ARE TALKING ABOUT A ROUGE NINJA, PROBABLY A MERCENARY FROM THE MIST! THE MIST; YOU HEAR ME? YOU DO NOT HAVE ANY SOLID PROOF OF THIS GAKU BEING RELATED TO THE HYUGAS! HOW CAN YOU BE SO INCONSIDERATE?"
"HE HAS A F*CKING BYAKUGAN LADY TSUNADE! AND HE…..ahemm and he mastered all the Jyuuken techniques known to me in about a week. That boy shows excellent levels of perseverance and potential. What I've made out from his story is that he is already very um-welcoming to his village. So I was wondering if we could…. You know sort of take him in."
"Wait a second. He mastered all the Jyuuken techniques in a week?"
"I have great plans for him. The power and control he shows is equivalent to a pure breed from the main branch. I've already spoken to the elders about his situation. If you agree to make him a nin of the Konoha, we as the Hyugas will proceed to the next part of the plan."
"And what is the next supposed part of the plan?"
"I cannot talk about it; not unless you agree to my former request."
"I am willing to consider your request; only after you tell me the next part of your 'grand plan'."
"We've decided to make Gaku the next leader of the Hyuga Clan. Please don't freak out yet okay?"
"I don't mind Hiashi-sama."
"WHAT? You sure you don't?"
"Although, I wish to see Gaku fight a Jonin and defeat him. If he does so, I will make him a nin of the leaf."
"Piece of cake Tsunade-sama."
"OH YEAH? HOW ABOUT THREE JONINS AT THE SAME TIME? OR YOU KNOW WHAT? THIS GAKU YOU ARE SO PROUD OF WILL FIGHT FIVE NINJAS OF MY CHOICE AND IF HE MANAGES TO BEAT THEM ONLY THEN HE IS TO BE A NINJA OF THE LEAF? HAPPY? THIS SHOULD BE A PIECE OF CAKE FOR HIM RIGHT?"
"You have misunderstood me Tsunade-sama. That is not what I mean. Don't you think this is a little unfair fo-"
"OR EVEN BETTER. HE WILL FIGHT ME! IF HE DOES WIN, I MYSELF WILL ANNOUNCE HIM AS THE NEXT LEADER OF THE HYUGA CLAN! "
"But Lady Tsunad-"
"DISMISSED!"
"Gaku I think I screwed it up for you."
"It doesn't matter Hiashi-sama. It won't be as bad as the Hokage demanding a spar with some Jonins? I trust you. You wouldn't let it come to that. Don't you agree Yūkimaru?"
"Hiashi-sama is a smart man Gaku. He is the clan leader." Yūkimaru followed in Gaku 's sarcasm.
"I'm flattered you think of me in that way my dear Gaku and Yūkimaru. I really am. Earlier, I mentioned earlier about screwing up Gaku's condition; I meant it. I ended up throwing Gaku in a fight to prove his abilities. And not just any fight. It's a fight against Lady Hokage. I did not mean to make it this hard for you Gaku. But our Hokage becomes awfully unreasonable when she's angry. Don't worry I'll talk to her again tomorrow."
"Father!" Both Neiji and Hinata shouted in unison. "Father, It's raining THIS!" Hinata showed her father a pamphlet.
"You've got to be kidding me." After sighing, Hiashi runs out of the mansion only to see several ninja jumping off rooftops throwing pamphlets on the way.
"Holy cow Gaku. You're more screwed than you ever were. You are to battle the Hokage for gaining the status of the Leader of the Hyugas. IT'S A DEATH MATCH!" Yūkimaru said after picking up a pamphlet from the ground.
"Well, it really is my chance to prove myself. I'll prove that I'm a worthy Mist Ninja and go back to my village. As for the leader of the Hyugas, I don't think so; apologies Hiashi-sama. I'm not exactly cut out for the leader of such an honorable clan. And in terms of the Death Match, I don't have to hold back then. TeeHee."
"I don't mean to discourage you Gaku but you do realize the extent of the Hokage's power right?"
"I do Hiashi-sama. You just wait and watch. I haven't pulled out my bag of tricks yet."
"But-"
"Believe us Hiashi-sama. Gaku really hasn't shown you his true power. Even I haven't seen the complete extent of his power. But as all of us here can sense his levels of confidence, I'm sure he will put up a good fight."
"WHAT THE FRICK IS WRONG WITH YOU TWO? SHE IS THE HOKAGE! ONE OF THE THREE LEGENDARY SANNIN! YOU REALLY CANNOT HOLD HER OFF THAT EASILY! YOU KNOW WHAT? YOU'RE ON YOUR OWN. IN FACT, I'M GOING TO PISS HER OFF MORE AND TELL HER TO ALL OUT ON YOU!"
"Dude, Hiashi just stormed out."
"I saw that Yūkimaru. Don't worry. If it comes to the point, I will kill the Hokage. All this will just be a test for me to battle Kakashi."
"I don't know dude. After all, the Hokage is supposed to be strong."
"Don't worry. I've got a plan. We're going to cheat. For now, I have some business to attend to. Summoning Jutsu!"
*poof*
"Is it time Master Haku?" Moeru kōri spoke.
"It is indeed."
"Reverse Summoning Jutsu!"
*poof*
The climate was rather cold with winter covering the land in snow and ice. The landscape was dominated by snowy mountains with tall glaciers making parts of the coastline inaccessible from the sea. When Haku looked up, he could see the enormous mountain stretch to as far he could see. He could not help himself but wonder where the peak of this mountain lied.
"So this is Mount Eberesuto."
"It is Master Haku. This is the Base Plate of the Mountain. There are a total of seventeen plates. Except for the first plate, the rest of the Mountain is cast under a Genjutsu through which only the blood of the Yuki can see. The Divine Art: Concealment Genjutsu allows the mountain to only exist only for the blood of the Yuki Clan; for the rest, they literally pass through the mountain."
"So where is the Great Snow Leopard Sage? After all, I need his permission to battle and cause destruction here."
"The Great Leopard Sage is a female Master Haku; And she resides on the seventeenth. The rest of us Leopards dwell between the Fifteenth and the Sixteenth Plates. This Base Plate is known as the Land of Snow to everyone and was once the place where Yukigakure stood."
"Yukigakure?"
"Yukigakure no Sato or The Village Hidden Among the Snow. That is the village of your origin Master Haku. You see, the Yuki Clan was special for a reason. Being the only Hyouton users, they were the first and the last ones to find out the true meaning of snow. This got them the trust and presents from the Heaven itself; the rest of Mount Eberesuto. By the time we reach the Sixteenth plate, you will too, know the true meaning of snow and when you do, you will be ready to meet the Great Snow Leopard Sage."
"See Moeru kori; I don't intend to discover the true meaning of snow and stuff. All I want is the permission from The Great Sage to Reverse Summon the Hokage and myself here tomorrow and wreck Havoc."
"To do that Master, you will have to meet the Great Sage and to meet her you need to discover the true meaning of snow."
"But climbing to the seventeenth plate is going to take years! Maybe even decades! Can't you just reverse summon me at the peak? Also, why can't you take the consent of the Great Sage on my behalf?"
"Master, I will remind you once again. You need to learn the true meaning of snow eventually & by yourself. For a head start Master, you should climb on back. I'm going to use a shortcut to the fifth plate from where the true horror begins."
"I might as well get myself a will before I die here. Oh well, let's use the shortcut. We have less than 18 hours before the fight begins. 3, 2, 1 and go!"
As soon as Haku hopped on Moeru kōri's back, he let out a loud roar and then muttered something under his breath. Suddenly, snow started to fall and he stepped on air; literally. The place where his front right paw stood was now a structure- a giant snowflake shining bright blue like Matatabi's fire. He then set his front left paw slightly higher the snowflake and another snowflake had formed there.
"Is this your shortcut? Magical Stairs?"
"As a matter of fact Master, it is. Hold on!"
He then jumped off these steps higher and landed on the newly formed snowflakes. The initial two steps had burnt out in a blue flame. Now, he started running on the air near the mountain, higher and higher. Wherever he stepped, giant blue shining snowflakes would form giving him a sturdy base to rest his paws on. After a minute, he started leaping distances! Haku now seemed awfully frightened as he had the intuition that he would lose his balance and fall off any second. After an hour or so of Haku's worst experience in the mountains, Moeru kōri landed on the Mountain.
"Here we are- The fifth base. Approximately 8000 meters above sea level. The air gets very thin here so use this tag to breathe properly. The seventeenth base lies at about 90,000 meters from sea level where breathing is impossible. Do not lose this tag. Although the mountain generates its own Oxygen, survival on the highest bases is purely based on feeding on the raw/natural energy. You could call it the sage power. At about 50,000 meters, you will have to start blocking off meteors. Try not to waste your energy on them though. Once you realize the true meanin-"
"Cut it about true meaning! Ugh. It's so annoying. I don't have time for this Moeru kōri. Please."
"I apologize Master Haku. But this is how it has to be. I will now have to bid you farewell."
"Wait-"
*poof*
"Now I'm officially doomed."
And with this, Haku starts walking towards the peak.
"I am still getting a bad feeling about this Lady Tsunade."
"It's okay Shizune. Besides, I have this *points at the mark on her forehead* with me. His Byakugan won't do a thing to me."
"I agree Lady Tsunade. It's just that the Hyuga elders wouldn't just agree to make a Mist nin with a seemingly mysterious background their clan leader without great thinking. After all, he is not older than 14 as stated by Hiashi-sama himself. All I'm saying is that this is kid is extraordinary."
"Stop doubting me before I start a spar with you Shizune!"
"Apologies Lady Tsunade."
After an extremely long and slow walk of Haku mostly talking to himself, thinking and crying, he suddenly stopped.
"This true meaning better not be the cheesy load of holiness, spirit, purity, containment of the devastating forces and the forbidden child of the Heaven and the Earth crap."
*poof*
"I know what has happened master. You took lesser time than we anticipated. You've only travelled some kilometers and have completed your assigned task. You're ready. Let's go to the Sixteenth Plate! Reverse Summoning Jutsu!"
*poof*
"I can feel it- The channel of energy. I feel so strong; Calm and strong."
"Master Haku, I suggest you open your eyes and feast upon the view."
The snow on the mountain glowed a faint white light. Several Snow Leopards were in proximity; all of them equally beautiful. Some were Bigger , the others small. Finding words to appreciate that beauty was impossible. The sky was more than a grand feast to the eyes. It was so dark, yet so bright. It grew darker the more you looked at it, painted black on blue and blue on black, one stroke at a time, into deeper and deeper shades of night. The stars were smiling, unaffected by the dark spell of the this scene. It was like a black, maddening arch in the sky; a vast cosmic ocean, endlessly deep in every direction, both Heaven and Pandemonium at once; mystical Zodiac, speckled flesh of creation itself; all that is chaos, infinite and eternal. And yet, it was somehow bringing to order of the chaos of Pandemonium which perhaps is always disturbing. The constellations, in their way, almost bring into sharper focus the immensity- monsters and giants brought to life in all their gigantic monstrosity; Orion and Hercules striding across the sky, limbs reaching for light years, only to be dwarfed by the likes of Draco, Pegasus, or Ursa Major. Then bigger still - Cetus, Eridanus, Ophiuchus, and Hydra, spanning nearly the whole of a hemisphere. Every moment was mesmerizing.
"I cannot even begin to fathom your content of living here Moeru kōri."
"I know Master. I know. Well, the moment you've most desperately waited for. She is here- The Great Sage."
Then as if from Heaven itself, great curtains of delicate light hung and trembled. Pale green and rose-pink, and as transparent as the most fragile fabric, and at the bottom edge a profound fiery crimson like the fires of Hell, they swung and shimmered loosely with more grace than the most skillful dancer. The Aurora Borealis was mind-bogglingly gorgeous.
Through the folds of the Northern Lights, A Humongous and Majestic Snow Leopard appeared. Strong and sturdy feet and battle scars all over her body seemed to glow. Her face reflected a maturity and sense of knowledge far beyond the oldest sage. Haku instinctively bowed down to the royal creature.
"Oh my. You don't need to do that Haku. I know the purpose of you seeking me out. And yes, I give you the permission to hold your battle here in the Land of Snow. But are you sure you know the true meaning of Snow? Water in all its forms is a symbol of knowledge. Descending water represents the transmission of knowledge from a higher to a lower place, the flow of information from teacher to student. Water flowing downward thus describes the universe's way of transmitting it's energy to us and represents the conduit through which our material existence and the Universe interact. The purpose of existence is to create unity between the Universe and life, so that we, in our limited and material existence can become integrated and unified in an intimate and equal relationship with Universe's. To achieve this neither the Divine nor the human can be compromised. Unity achieved on Universe's terms would annihilate our identities, our existence. If water – the divine wisdom – were to flow continuously, it would totally submerge and obliterate, not allowing space for any other existence. So water flows in various measures to allow for the transmission to be internalized. Sometimes water flows as rain and sometimes it freezes to different degrees producing snow, hail or sleet, which are all metaphors for the teacher monitoring and transforming the flow into forms that the student can contain and assimilate. Ice on the other hand, is a transmission that is more on the recipient's terms. The information has solidified into a compact state so that the student can internalize it. The flow has ceased and turned into a solid form, so the student is not overwhelmed by the continuous flow of new ideas. A snowflake is formed when water takes shape around microscopic particles and the cold air turns it into ice crystals. Thus snow has two components: water and earth – earth being the particles, and the water being the droplets. Earth is the material world – without any recognition of the Universe; water is the knowledge of Universe – divine energy without any containers. Thus snow, being half heaven and half earth provides the perfect intermediary between these two worlds. Snow consists of separate snowflakes that are actually independent properties – each comprised of about 100 ice crystals. Snowflakes cling to each other but they are not intrinsically one. In contrast, water is one unified entity. Although it consists of droplets, each drop joins with another and they become one body of water. Snow falls gently and silently, teaching us in our own process of educating others and educating ourselves, that we need gentleness. If we educate with a sledgehammer – with unceasing rain pour – it will simply submerge and destroy the crops. Even when it rains on earth, science tells us that on a higher level, the beginning process could have originated in snowflakes. So snowflakes are a symbol of that first gentle step. The serenity and whiteness of snow attracts us. We can sense the purity of snow. Snow is a great equalizer and has the ability to cover over the impurities of life and remind us of our own purity. Ultimately, snow is heaven speaking to us – speaking to us through purity, speaking to us gently and gradually on our terms. Snow is the intermediary stage between heaven and earth; ice is a little closer to the level of earth; sleet is in between snow and ice. Thus every weather condition sends us a message and lesson – whether it's rain, snow, ice, sleet or hail. The story of frost containing fire, or the Hyouton being a combination of water and the storms- two formidable forces, or the fact that the genjutsu cast on this mountain talks about concealment- a type of containing are all signs of snow's supremacy.
I will be looking forward to your battle tomorrow. I suggest you stay here for the night. Train, eat, sleep and enjoy."
"Thank you Great Sage."
After Haku expressed his gratitude, the Great Sage disappeared into the Northern lights.
Next Day
The Fifth Hokage stood in front of the Hyuga Mansion with a particularly bad temper and was greeted by Neiji.
"Greetings Lady Tsunade."
"Where is Gaku?"
"Lord Gaku awaits you at the battle arena Mi Lady."
"Well, I suppose you are coming there to witness your Lord's death."
"Quite the opposite Mi Lady."
"Let's go then."
"So you are Gaku."
"I am indeed. It is a pleasure to demonstrate my strength in front of you Hokage-sama."
"Ha. I will make sure that this fight is pleasurable for you- in the most slow and painful manner. Cha!"
Tsunade uses her Chakra Enhanced Strength and tries to get Haku. She concentrates her chakra into her fist and lunges towards Haku only to miss him. Even when her fist missed, it hit the ground creating a large crater. Haku had jumped backwards just in time which resulted in him successfully avoiding Tsunade's attack.
"You're not too shabby Gaku. But let's see you dodge this! Cha!"
Tsunade then stabs the ground beneath her with a finger and a huge fissure is created which appears as if separating the ground into two. The fissure travels to the point where Haku lands and before Haku can escape the fissure, Tsunade yells- "Earth Release: Double Suicide Decapitation Technique!"
Almost instantaneously, Haku is dragged further deep in the fissure and is left completely unable to move. He then activates his Byakugan.
"Byakugan!"
Tsunade then jumps in the air and aims towards Haku- "Not so fast Gaku. Heaven Spear Kick!"
Haku quickly shouts, "Gentle Fist Art One Blow Body!" The ground around him shakes and suddenly disintegrates into pieces. He was now waited for Tsunade to come in proximity and when she did, he yelled, "Eight Trigrams Palms Revolving Heaven!"
After releasing chakra from every tenketsu in his body, Haku spinned rapidly to parry the attack from Tsunade, both creating a rotating shield of chakra around him and tossing her away. He then slammed his palm on the ground and performed his next jutsu- "Eight Trigrams Grid Palm!"
The ground started to glow in an eerie purple color and a network of grids extended from Haku's arm to the place of impact where Tsunade fell. The network started crawling all over Tsunade's body and inflicted her with immense pain.
"Where and when did he learn THAT!?" Hiashi wondered to himself from the crowd.
Taking the opportunity of Tsunade's immobility, Haku used Water Style: Multiple Water Clone Jutsu and six more Haku(s) appeared.
"You… are…nnott going…to get awwaayyy fromm thi-" Tsunade stammered with pain still coursing through her veins.
"I think I already have Hokage-sama. NOW!" said the original Haku while leaping right on top of Tsunade and throwing chakra enhanced senbons at the eight main tenketsu of her body therefore completely stopping her chakra flow. Meanwhile, the other six Haku surrounded Tsunade and the Original Haku and slammed their palms on the network grid formed from the Eight Trigrams Grid Palm. The ground now returned to its original color and the kanji on the grid started glowing in a greenish shade. All six Haku(s) shouted in perfect unison, "Combined Summoning Technique!" Tsunade and Haku disappeared in a puff of smoke while all the other six water clones melted and dispelled leaving behind puddles of water in a now empty arena.
"What does he intend on doing? And where is Yūkimaru?" Hiashi wondered.
"Senbons and Water Release from the Mist. Where have I seen that before?" Kakashi thought.
Whispers like "Where did they go?", "Did the Hokage fall prey to such a young Hyuga? How petty.", "Id too she really strong enough to be Hokage?", "Did you see how she was struggling against that child?", and "That Hyuga is doing very well against someone as strong as Hokage" could now be heard in the crowd.
"Everyone calm down. We have sent an entire ANBU unit to track where Gaku has taken Lady Hokage. We will find them very soon. As for Hiashi Hyuga, we wish to speak with you in the Hokage's Office." Shizune shrieked with Shikaku and Inoichi beside her.
All four of them travel to the Hokage's Office where the latter three vigorously start questioning Hiashi and his knowledge related to the acts of Haku. Completely confused, Hiashi constantly replies by saying that he had no clue whatsoever of Haku being this strong. Just then, Kakashi barges in the office stating that he thinks that the boy is Haku, Zabuza's apprentice who wants to extract some sort of personal vendetta from him. He also says that Haku might have teleported Tsunade and himself to either the Great Bridge in Kirigakure or someplace cold and icy as he is an excellent Hyouton user and will exploit that power of his. Although there are signs of protest from the Hokage's men, they agree to send a team of elite Jonin led by Kakashi himself to the now in turmoil of deciding the Fourth Mizukage- Hidden Mist Village.
"Where have you brought me Gaku?"
"We are in The Land of Snow Lady Tsunade; and before anything else I need to be honest." Haku deactivates his Eight Trigrams Grid Palms and takes out all the senbons from Tsunade's Body. He continues, "My real name is Haku; The Dual Wielding Swordsman of the Mist and Zabuza Momochi's apprentice. I do not wish to be incorporated as a Hyuga in your village. I'm faithful to the Hidden Mist and I need to go back to my village and aid it in finding a fit and worthy Mizukage. I request you to forget all this and I will summon you back to Konoha and be on my way."
"YOU WANT ME TO FORGET ALL THIS?! OH I'LL LET YOU GO AFTER I KILL YOU!" Tsunade screamed in anger.
"You asked for it. I'm gonna have to kill you now."
"OH YOU'RE GONNA KILL ME? AS IF THAT WILL HAPPEN. Ninja Art Creation Rebirth- Strength of a Hundred Technique!" The seal on Tsunade's forehead reputed to be the pinnacle of chakra control stored vast amounts of chakra over an extended period of time. The Creation Rebirth Technique released the seal and black markings wrapped around Tsunade's entire body. The stored chakra is then released into her body, greatly amplifying the power of her other techniques.
"The Strength of a Hundred Technique has a continuous, automatic effect that will heal any damage that I sustain instantly without the need to make hand seals or even a conscious effort to activate the healing process as long as I have chakra left. You can't inflict any damage to me now."
"I'm sorry it came to this Hokage-sama, but you're going to die. You just told me the weakness to your technique."
Haku deactivated his Transformation Jutsu and returned to his regular attire. He sprouted two more arms made out of water just below his original arms. "You're dead. So very very dead."
"Try me. Cha!" Tsunade tried to attack Haku but was stopped .
"Byakugan! Demonic Mirroring Ice Crystals!" In an instant, multiple mirrors of ice were created around Tsunade, reflecting nothing but Haku. She was trapped in a dome of twenty-one floating mirrors made out of ice. Twelve remained at ground level, eight floated above the first twelve and angled towards the ground, and the final mirror was above the rest and facing the ground.
"Jyuuken Hyouton Style: Chakra enhanced Thousand Needles of Death! Now for completely doing away with that all so special chakra seal of yours, Eight Trigrams One Hundred Twenty-Eight Palms!"
After some seconds a large explosion occurred in the dome of ice mirrors and it burst open revealing a badly damaged Tsunade on the ground and place of impact.
"Heh. As if something like that would kill me." The wounds on Tsunade's body started healing with tremendous speed and within almost no time she was standing on her feet ready to brawl again.
"I must say Haku. I'm impressed. If it wasn't for the seal, this could have hurt me. But if you think that weak and shabby techniques like this are going to defeat me, then you are only ridiculing yourself. Summoning Jutsu!"
*poof*
A huge slug appeared on right below Tsunade.
"You called for me Lady Tsunade?"
"I did Katsuyu. Let's show this piece of arrogant crap the true power of a Sannin. Use your Acid! Melt him!"
The giant slug spewed acid from her mouth onto Haku but he saved himself just in time-
"Ice Release: Ice Rock Dome of Magnificent Nothingness!"
Haku quickly froze the surrounding air and created a protective ice dome around him. The acid slipped right off the shield melting the surrounding ice an eventually the dome as well.
"You forced me to do this. Ice Release: Earthen Consecutive Chains of Ice!" Chains of Ice started to extend from Haku's hands and ice started to form on Tsunade's seal and she fell on her knees. Katsuyu disappeared in a puff of smoke and Tsunade was in so much pain that she could only cry and not utter a single word. As tears dropped from her eyes, they froze. Tsunade would soon start freezing to death. Although her seal prevented this from happening, she went completely numb from the cold and was rendered useless. Then Haku, known for performing jutsu with just one hand started weaving hand signs in all four arms of his- all of signs were the same i.e. He was about to perform the same jutsu four times simultaneously.
"With this, I'll isolate you. Ice Release: One Horned White Whale!" Four humongous whales made out of preexisting ice with a long narwhal horn jumped out of the sea. Haku raised his hand and used his Yuki Style: Hydro-Cryo kenesis to move and arrange the four whale in a square- each whales' horn facing the tail of another. They fell on the ground and a square piece of landmass inside the whale square separated from the rest of the Land of Snow.
"That should keep your monstrous power in check. Trying using it where you are and the land will instantly break throwing you in the deep sea below. Now, where were we? Ah yes. I was deciding whether to kill you or not. There is still time to save yourself. Let us forget what happened here and go back to minding our own business." Haku screamed while undoing the chakra chains on Tsunade.
"Minding my business? Oh alright. It is my business to maintain the pride of the Hokage, one of the three legendary Sannin, and as a medical nin and defeat you. Water Style: Water Dragon Jutsu!"
"Ice Style: Black Dragon Blizzard!"
A huge and scary water dragon from behind Tsunade from the sea emerged and lunged towards Haku and ended up colliding with four scarier and darker dragons of black ice emerging from Haku's four arms.
"You are very strong Tsunade-sama. A worthy Hokage indeed. But in a place where you cannot use you physical prowess, you will lose. Plus, this is my domain. I could defeat you anytime I wanted to."
"STOP IT! GIVE UP THE STRUGGLE AND JUST DIE ALREADY!" Tsunade howled in anger.
"I'm sorry Hokage-sama but this is the end."
With his two upper hands he started performing one jutsu and using his other two hands, he performed another on. He extend his water arms and slammed them on the ground while he created held his upper arms upfront and executed two jutsus.
"Ice Style: Tsubame Blizzard! Ice Style: Certain-kill Ice spears!"
Giant spikes made of ice impaled Tsunade from below her while several ice needles in the shape of miniature swallows came into being out of preexisting ice from around and lunged at Tsunade.
"Fire Style: Fire ball Jutsu!" Tsunade yelled melting all the swallows while slowly removing herself from the spikes. She was coughing blood but eventually healed completely due to the power of the seal.
"Not so fast." Haku jumped towards Tsunade and opened a scroll and yelling, "Summoning!" revealing the Nuibari and the Executioner's Blade. He then stabbed both of these blades into Tsunade and said, "Byakugan! Jyuuken enhanced Chakra Absorption!"
Tsunade fell on the ice and the markings on her body receded back to the rhombus-shaped mark on her body. She was defeated. Haku had sucked the very life force out of her. He carried her body and rests her on soft ice to mourn. When he regains his charkra control, he uses his Yuki Style: Hydro-Cryo kenesis to cover Tsunade's dead body in clear and transparent ice. He had ignored the fact that a miniature division of Katsuyu was hiding in Tsunade's clevage trying to remain concealed, heal Tsunade and observe the turn of events. When he covered Tsunade's body in ice, Katsuyu was forced to return.
"This will ensure that you don't die just yet. The ice will heal you- slowly and steadily. Till then, please bear with the boredom."
He then summons himself to the Hidden Mist on the Great Naruto Bridge and meets up with Yūkimaru there. Yūkimaru and Haku then create water clones that use Transformation jutsu to look like normal ferrymen and take Tsunade's body covered in ice back to Konoha. As for the real Haku and Yūkimaru, they both head for the Mizukage's tower to stop the madness in the Mist once and for all.
End of Second Chapter.