The battle between the two bosses rages on, with Byakuran continuing to crush Tsuna with his Transparent Giant Hand technique. Byakuran expresses his disappointment in Tsuna, saying that he expected Tsuna to put up a better fight, and points out that the size of a person's Flames is equivalent to the resolve of the said person. He tells Tsuna that this could only mean that Tsuna's resolve about wanting to return his friends safely back to the past, was extremely weak.
This statement makes Tsuna think about all the people who had been dragged into this vicious battle from the past. Tsuna's desire to defeat Byakuran and protect his friends grow, and Tsuna, once again lights his Vongola Ring with Flames.
The pressure from Tsuna's Flames rise, but Byakuran matches the rise by increasing his own Flames. Tsuna, extremely determined, further increases the size and strength of his flames, Byakuran acknowledges Tsuna's flames, but once again matches Tsuna's flames by increasing his own.
Soon, the entire area is lit up by this incredible release of Flames. Everyone watches this exchange, overwhelmed by the Flames being released by the two bosses.
Belphegor and Mukuro Rokudo seem more confident as they watch their boss hold his own against his Millefiore counterpart. The flames being released rises even further, and when it reaches an incredibly high output, a gong-like sound rings across the battlefield.
Byakuran excitedly says it's here, Tsuna seems taken aback at what just happened. Two Barriers made up of Sky Flames covers both Byakuran and Tsuna. The reverberating sound continues, and everyone around, aside from Byakuran, tries to figure out what on earth the sound meant. Squalo notices, and points out the noise came from Tsuna's and Byakuran's Rings. It was then that Dino realizes that the rings are resonating.
At the campsite, Uni's Arcobaleno Pacifier destroys its protective cover and immediately startes releasing a furious amount of Sky Flames, much to Uni's shock. The flames being released soon form a barrier around Uni, similar to the barriers formed around Byakuran and Tsuna.
Her friends and allies, seem taken aback by what is happening. They hear the reverberating sound as well, and figure out that it is coming from the Pacifier. Her allies ask her what's going on, but Uni is just as lost as they are.
While the reverberating continues, Uni realizes that Byakuran's and Tsuna's rings are resonating with her own Pacifier. Reborn, who is watching all this intently, figures out that the Sky Elements of the Tri-ni-sette are calling to one another. His thought is interrupted by a gasp from Uni. Her barrier has left the ground, and Uni, quite worriedly says that she has no control over her body. She calls out to Reborn desperately as she begins to float away. Reborn, determined to save her, leaps up and tries to stop the barrier, but even he can't do anything about it. Uni calls out desperately, and her allies look extremely worried. They soon realize that she is heading towards the battlefield, towards Byakuran.
At the battlefield, Tsuna's allies realize that none of their attacks have any effect on the now expanding barriers. Soon they notice another barrier floating towards the other two, and much to their disdain, they realize that the person inside that barrier was none other than Uni.
The allies wonder what made Uni come out to meet Byakuran all by herself. Byakuran answers that question, by saying that she was summoned here by Tsuna and himself.
Mukuro Rokudo notices that the Vongola Ring, the Mare Ring and the Arcobaleno Pacifier are the cause of this phenomenon, and realizes that the Sky Elements of the Tri-ni-sette are gathering together. He wonders if the strain put on the rings during the incredible release of flames by Tsuna and Byakuran earlier, caused the three to come together.
As the barriers get closer together, Gokudera realizes that Uni's Flame barrier is attempting to join with Tsuna's and Byakuran's. The allies realize the gravity of the situation and begin an assault to try and stop this from happening.
Gokudera fires his Flame Arrow and Xanxus fires his Flame of Wrath, but the two attacks combined don't even make the barrier flinch. Yamamoto, who has released his Cambio Forma, attempts to break the barrier with a direct assault, but that too ends in failure. The allies realize that the barrier is too strong to penetrate, and helplessly watch as Uni's barrier completes its merge with the other two, making Uni be just a few feet away from the last person who she wants to be around, Byakuran.
Byakuran greets Uni in his usual sinister, yet carefree way, Tsuna, now finding it hard to put two words together, asks her to stay back, Uni calls for Tsuna in concern but is greeted by Byakuran's sinister laugh. Byakuran begins explaining the nature behind this phenomenon. He says that when the Tri-ni-sette Sky Elements release an incredible amount of flames, it creates the unique situation they were in now. He says that it's a special stage where the three of them won't be interrupted, that its a stage for the Tri-ni-sette Sky elements alone. He then says quite casually, that now that Uni was summoned, he no longer had any use for Tsuna, so soon it'll just be Uni and him, and once again begins to crush Tsuna.
Uni begs Byakuran to stop, Byakuran glares at her and asks her how she could tell him to stop at this stage. He starts to blame Uni for everything that had happened, saying that it was her that had forced the Vongola Members to risk their lives to protect her, even when Uni herself knew that they had no chance of beating him. He says that her pointless escape only served to increase the number of casualties that the battle had produced. He says that she couldn't be any more selfish than she had been.
Uni listens to Byakuran's speech, looking to be in pain as Byakuran continues to taunt her. While Byakuran is doing this, something glows under Uni's cloak. Uni tries to hide it, but Byakuran has noticed, and his eyes have an excited glint as he asks her what that is. Uni whispers "not yet", which once again catches Byakuran's notice, and although Uni tries to protect whatever it is that she's hiding, the objects soon wriggle free and fall to the ground.
These items turn out to be the Arcobaleno Pacifiers, but there is something strange about the Pacifiers, all of them have something sticking out of them.
Reborn and Futa arrive, and Reborn explains that the Arcobaleno are beginning to regenerate their bodies, or in other words, they are being reborn. This information takes everybody by surprise, the fact that the strongest babies are being revived, was something nobody expected.
Reborn explains that he had heard that the Sky Arcobaleno had the power to restore the other Arcobaleno from the verge of death, but even he admits that he had no idea that the Arcobaleno would be revived from their own Pacifers. Upon hearing this, Bel shows a bit of relief that Mammon would be revived, and Lal Mirch seemed happy that, if everything goes according to plan, Colonnello too would be revived.
Byakuran and Kikyo then realize that the real reason that Uni had escaped, was to buy time for the Arcobaleno to be revived. For this reason, she escaped from the Millefiore and begged Tsuna to protect her, and the pacifiers of her brethren. Soon, they realize, that if the Arcobaleno were to be revived, the balance of the Tri-ni-sette would be restored, and if the Arcobaleno at full power join forces with Tsuna, defeating Byakuran could become a reality.
Uni, tightly holds on to the Pacifiers, and Byakuran after thinking for awhile, realizes that there is no Non Tri-ni-sette Policy around to torture the Arcobaleno, and does admit that it would be annoying if they were revived, but Byakuran, quite sharp to notice, points out that he at least has an hour before the Arcobaleno can return. The look of surprise from Uni confirms that Byakuran's observation is accurate. Byakuran, now realizing that he was right, makes a squeeze motion with his palm, and Tsuna, who is still caught by Byakuran's Transparent Giant Hand, lets out a cry of agony, as the sound of bones breaking echoes across the battlefield.
Tsuna's eyes lose the color they gain when he enters Hyper Dying Will Mode, and Byakuran, smirks as he releases the technique. Tsuna stays motionless for a few seconds, before collapsing onto the floor, and soon, the trademark Dying Will Flame on his forehead disappears as well.
Tsuna's friends scream as Tsuna collapses. Byakuran, completely ignoring the now motionless Tsuna, tells Uni that she can call whoever she likes, and he still won't lose, but says that would be a complete waste of his time. He points out that no one could enter the barrier they were in, and says that Uni is his now. He tells her that the Arcobaleno aren't going to be enough to defeat him.
Reborn, surprisingly agrees with Byakuran, a comment which surprises both Byakuran and Uni. But Reborn continues, saying that the Arcobaleno aren't the ones who are going to defeat him, that job belongs to his student, Tsuna.
The girls, and the others at the camp rush into the battlefield. Haru immediately sees a person lying motionless on the ground, and much to their disbelief, they realize that it is Tsuna. They stare at the motionless figure, unable to completely comprehend the situation.
Byakuran grins and asks Reborn whether it was Tsuna who told him that he would be the one to beat him. Reborn confirms this, and Byakuran scorns at Reborn, asking him if he had been paying attention to anything that had happened and points out that he had already crushed Tsuna.
Reborn tells Byakuran, not to underestimate Tsuna, Reborn then turns his attention onto Tsuna and starts speaking to him. He tells Tsuna that he had to defeat Byakuran, but still, Tsuna remains motionless.
Mukuro looks at Reborn and thinks back to his battle with Tsuna, and thinks that what Reborn is doing, is the same thing he did back then. He notices that whenever Tsuna is in a pinch, Reborn always appeared to guide him, and encourage him.
Byakuran laughs at what Reborn just said and says that he thought that Reborn had more of a point to make, but the fact that all he did was give a motivational speech came as a surprise. Reborn tells Byakuran that that's how he rolls and turns his attention back to Tsuna. He tells Tsuna that he isn't the only one putting everything on the line in this battle. He tells him that Uni plans to send everybody back to the past by sacrificing her own life.
Reborn explains that the revival of the Arcobaleno takes more than Uni's power, he says that she had to burn her "Life Flame", and this will lead to the destruction of her body, and result in her death.
Uni is surprised that Reborn knew about this, but Reborn says that it wasn't too hard to guess, as she is exactly like her grandmother, Luce. Byakuran who had listened quietly to Reborn's explanation speaks up, he tells Uni that he can't allow her to do such a foolish thing, as her life belonged to him. He takes a step towards Uni but is interrupted by someone coughing.
Tsuna coughs feebly, as he tries to get up he, in a weak voice, tells Byakuran that he won't let him have Uni. Byakuran laughs at Tsuna, and points out how much he is shaking. He scorns Tsuna, telling him that he could feel Tsuna shaking, even where he is, and mentions that it's probably because his body remembers the beating he had just taken.
Byakuran tells Tsuna that it is unlucky of him to have woken up in his situation. He mentions that he knows a lot about Tsuna, everything about him being a normal middle school student who failed in both academics and athletics, till he met a powerful hitman who thrust him into the dangerous world of the Mafia. Byakuran goes onto talk about Tsuna's battle with Mukuro, and eventually the battle with the Varia. He tells Tsuna that he had been extremely unlucky, and once he came into the future, his luck had finally run out. Byakuran goes onto say that, if Tsuna hadn't been brought to the future, he wouldn't have had to suffer as much as he did, and tells Tsuna to curse has own fate for everything that had happened.
Tsuna surprises everyone by denying Byakuran's theories. Tsuna explains that, although the future had brought him great fear, pain and worry, and although he was only truly happy for a short period of time, he understands that you have to take the good with the bad, and says that he considers everything that had happened to be precious moments in his life.
Byakuran, who doesn't seem impressed, tells Tsuna that his way of looking at things is certainly an interesting interpretation, but that Tsuna should realize that none of what he said will matter once he kills him.
Byakuran takes out a Mini White Dragon, Tsuna's allies immediately realize the danger, and Gokudera makes a desperate attempt at stopping Byakuran by firing his Flame Arrow. However the barrier holds, and Byakuran still stands.
Byakuran, completely ignoring what is happening outside, wonders a bit, and decides that at Tsuna's current state sending the Mini White Dragon through the heart would be enough to kill him. Tsuna, who is out of Hyper Dying Will Mode, and so has his original personality, panics, and asks Byakuran to wait, Byakuran, however, doesn't wait and throws the Mini Dragon right at Tsuna. The attack hits him straight at the heart, and Tsuna, as allies watch stunned, falls.
Byakuran laughs at the fallen Tsuna, and savoring the moment, turns to Uni and tells her that her savior is now dead. But he is proven wrong by a loud scream.
Tsuna gets up, screaming that, that attack hurt. As allies watch relieved, Tsuna rips his shirt and looks at the Mini Dragon. The attack had been stopped by something given to him long ago, as a token of gratitude from a friend Tsuna had saved. It had been stopped by the very Ring that Lancia had given him after the battle for the position of boss with the Varia, Lancia's Boss's Ring.
Tsuna see's the ring that had saved him and begins to realize that everything that had happened up till this point had played a part, and led up to everything he's done. He says that he wouldn't give up a moment which he had spent in the future, the pain, the suffering, the fun, none of it. Tsuna realizes that he is here now because of the people there for him, whether it was Kyoko and Haru's support through doing the chores and helping him, and the other Guardians by being there, or Spanner helping Tsuna perfect his X-Burner, or the Vongola Box Weapons left to the current Guardians by Future Tsuna, or Kyoko helping Tsuna understand Nuts' intentions, he realizes that everyone of the people he had met had helped him get by and that he wouldn't be here now if it hadn't been for their support.
Tsuna questions what Byakuran had said about him being unlucky, and says that he is wrong because he feels extremely lucky, he says that he treasures every moment he had spent since he had come to the future. Tsuna finally says that his flames could only have been born in this world, the world Byakuran rules. Tsuna's Wool Mittens light up, and he continues saying that Byakuran had hurt many people, and Tsuna, now back in Hyper Dying Will Mode, promises to make Byakuran pay for all that he has done.
Byakuran laughs at Tsuna, and points out, no matter what Tsuna had said, he had already proven that his power is far superior to Tsuna's. Tsuna's mittens turn into the X-Gloves as a voice asks Byakuran whether he is sure of what he had just said.
The rings of all the Guardian begin to glow, much to the shock of their holders. And soon, the 10th Generation Guardian's predecessors appear from their respective rings.
First up was G, who comments on the pathetic look that Gokudeara had on his face, Lambo who once again meets Lampow, nosily starts to comment on Lampow's appearance, Lampow, who doesn't like kid, asks Lambo to keep it down, and points out his dislike of kids, specially runny nosed cow kids.
Ugetsu Asari meets Yamamoto again, and tells him that they will always be with them, watching over them. Knuckle tells Ryohei that he isn't the type to give up, Ryohei admits this, but wonders what they could do. Hibari answers Ryohei's question, telling him that he'll bite Byakuran to death, Alaudi, who was listening in, tells Hibari that in his current state, that would be impossible.
Demon Spade, who had appeared from Mukuro Rokudo's ring, states that it's a pity that Tsuna, even when he has his back against the wall, refuses to change his stance, and notes that the Vongola do not need that kind of weakness.
Lampow says that what Tsuna said, was exactly the thing that their own boss had often said. Asari states that this Generation of Guardians truly had inherited their wills. The voice asks if it was ok then. G points out that they had already deemed the Guardians worthy, and says that he didn't need to ask them. He tells the voice to just do whatever he wants like he always did.
The voice, which is coming from within the barrier, agrees with G, Byakuran is confused as to what is happening, he looks around for the source of the voice, but can't find it.
Tsuna's ring now glows brightly, as the voice now addresses him. It tells Tsuna that he agrees with Tsuna's way of thinking, and goes on to say that it would like to help out its true successor personally but is unable to do that. The crest on Tsuna's gloves now glows brightly and is projected outside the Gloves, and from the Gloves emerge the founder and the First Generation Vongola Boss, Giotto, who tells Tsuna that he'll unleash him.