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Gotoh is killed by Hisoka, while the other butlers keep following Killua until he manages to shake them off. Meanwhile, Illumi uses his needles to take control of several people to assist on his plans and when news of it come to the Association, a team of Hunters is assembled to bring him to justice, while some of them decide to take advantage of it in order to win the election.

Leorio's confrontation with Ging earns him the respect of his fellow Hunters and make him one of the frontrunners for the election. Meanwhile, Illumi begins an attack on Killua as part of his plan to kill Alluka, assisted by Hisoka, who has other plans for her.

Killua reunites with his sister Alluka and uses her as a leverage for them to be allowed to leave the Zoldick state, as her powers can only be used to heal Gon if she is close to him. Meanwhile, Illumi asks for Hisoka's help to stop Killua's plans, and with elections yet to reach a conclusion, the Zodiacs keep arguing about a possible way to bring it to end.

With the elections in a stalemate, Pariston, the current vice-president proposes a new set of rules to his fellow Zodiacs in order to solve the impasse, but the others know that he actually plans to make use of this to secure a victory for himself. Meanwhile, Killua returns home and asks his father to let him see his younger sister Alluka, intending to use her mysterious and frightening power to grant wishes in order to save Gon's life.

After the fall of the king, the remaining Chimera Ants move on with their lives, each following their own path. However, Gon is still in critical condition after his battle with Neferpitou and Killua departs in search for a way to heal his body. Meanwhile, the top members of the Hunter Association, the Zodiacs, assemble to organize the election to choose the next president, following the will of Netero's last message.

Now knowing his fate, Meruem admits defeat and reveals that all he wants now is to spend his final moments playing with Komugi, convincing Palm to tell him where she is hidden. East Gorteau and the NGL gets in turmoil after the fall of the Chimera Ants and the Hunter Association start making preparations to decide who will succeed Netero as its president. Despite knowing that she will also be poisoned to death by staying close to Meruem, Komugi stays by his side until his last breath and passes away in sequence.

A message of hostage exchange sends Welfin on the field. One moment he encounters Menthuthuyoupi, and the next, Shaiapouf finds Youpi lifeless. When he returns to the King, Meruem demands Shaiapouf's secrets. On their way, Shaiapouf unsuspectingly coughs out blood, just like how blood trickled from the King and Menthuthuyoupi.

The King still struggles to retrieve his memories as he and his two remaining Royal Guards return to the palace. He eventually knocks out Meleoron and Knuckle Bine with his En, and later engages Shaiapouf and Menthuthuyoupi in a race against time. Meanwhile, only two remain, Palm and Ikalgo, and hide an unconscious Komugi underground.

Shaiapouf continues his plan to remove anything that could trigger Meruem's memory of Komugi as the King arrives at the palace. Killua continues to hold onto Komugi, and meets with Palm. Gon and Neferpitou arrive where Kite is, however, Gon must now face the truth.

Shaiapouf's plan to kill Komugi is thwarted when Killua faces him in a battle of words and speed. When the King arrives in the palace, Shaiapouf is resolved to get rid of the Gungi board before the King can remember anything else. Finally, Neferpitou and Gon arrive at the place of their long-awaited battle.

Pouf and Youpi sacrifice most of their own bodies to heal Meruem, who rises stronger than before, but with most of his memories missing. Pouf then decides to take this opportunity to dispose of Komugi in hopes that Meruem never remembers about her at all, but is attacked by the other hunters, who realize, much to their horror, that the king is still alive and is about to return to the palace.

Pitou completes Komugi's treatment and Gon forces her to accompany him to Peijing in order to restore Kaito's mind, while Komugi stays behind with Killua and the others. Meanwhile, Pouf and Youpi reach the site of Netero's battle with Meruem and can't hide their feelings of sadness upon finding their king's maimed body.

The king bypasses Netero's defenses and tears up an arm and a leg from his body. Refusing to give up, the chairman focuses all his Nen into a final attack that also fails to defeat him. Having won the match, the king finally learns from Netero his true name - Meruem, just before Netero commits suicide to trigger a weapon of mass destruction stored inside his body in a last attempt to destroy him.

Netero convinces the king to fight him by revealing that he will tell him his true name once defeated. The chairman then unleashes his most powerful technique that despite striking the king countless times, olny manages to scratch him.

Killua meets Palm and she finds it asks where Gon. Killua but refuses to say if she was angry. The battle between them. During the battle Killua tries to reach Palm and it succeeds.

Welfin confronts Ikalgo but still achieve the opposite. He makes Welfin recall of human life and gives him a hint about the place Palm.

Knuckle and Morel confront Youpi with their lives on the line, but just a few moments left of neutralizing his nen with his ability, he is forced to abandon his master or give up on defeating his oponent.

Ikalgo faces Bloster. When Youpi was ready to kill the enemy broke Killua paralyzing him with lightning.

Cheetu attempts to provoke Zeno, but Silva intervenes to pick up his father. At the same time the battle Youpi and Knuckle in full swing during the battle Youpi decides to use his anger to win.

Gon and Killua finally meet Neferpitou. Gon wants to kill her, but when she realizes that she is ready to sacrifice himself to protect Komugi gives her one hour.

The disguised Ikalgo gets to the lower levels of the palace to find Palm. Meanwhile Meleoron lost it, but the other Chimera Ant, Welfin, tracks his smell. Gon and Killua find Pitou and see that it heals Komugi.

Leaving his royal guard of the king leaves palace with Netero, Gon and learns about the place Pitou. Meanwhile Pouf creates a cocoon to be reborn, and fights with Morel Youpi to the limit, but it makes a Knuckle.

Shoot and Knuckle remain to fight Youpi, and Morel seeks to Pouf. Killua looking Pitou returns to help Ikalgo.

Gon's party confronts Youpi while Pouf and Pitou rush to the palace to assist the king, who is distraught with Komugi's condition as she gets herself badly injured during the attack.

The Hunters assault on the royal palace begins. Gon and his friends break inside and come across Menthuthuyoupi, while Netero and Zeno strike from the sky and Neferpitou jumps up to confront them, just to be driven away when the chairman makes a small demonstration of his powers.

The selection is at hand, but the king starts isolating himself from his servants, including the Royal Guard. Meanwhile, Gon's party is about to break into the palace.

The time has come for Gon and his friends to infiltrate the palace and confront the Royal Guard, who are making preparations for the upcoming selection. As his concerns about Komugi increase, the king starts questioning his own existence and purpose.

Gon and his friends make the final preparations for their assault on the palace. Meanwhile, the king is yet to defeat Komugi, the Gungi champion and when he decides to kill her, he ends up protecting her instead, for reasons that even he can't explain.

Even with his borrowed powers, Leol has been defeated by Morel while Killua recovers from his wounds and invites Ikalgo to join his side. Meanwhile, Palm starts her investigation when a massive and ominous aura surrounds her.

Knov succeeds in his mission to breach the palace's security, but just feeling the proximity of Royal Guards' overwhelming aura is enough to drive him into despair. Palm takes advantage of the lecherous secretary Bizelf to infiltrate the palace as well and Morel is confronted by the Chimera Ant Leol, who fights using the powers of those who owe him a favor.

The king attempts to intimidate the Gungi champion but moved by her determination, he rips off his own arm as a form of apology. With Neferpitou using her powers to treat the king, the palace's defenses are lowered and Knov rushes to sneak inside it in preparations for the hunters' attack. Meanwhile, Palm prepares to infiltrate the palace as well.

As the king is yet to defeat his opponent, Cheetu tries to provoke Morel into running after him with no success, unaware that he is setting a trap for him. Meanwhile, Knov realizes the enemy's trick to detect him and comes with countermeasures against it.

Despite having mastered the rules of the board game "Gungi", the king is upset for still being unable to defeat the champion before him. Meanwhile, Morel is approached by Cheetu who uses his new abilities to trap him inside a closed space, claiming that he can't leave unless he manages to catch him in 8 hours.

Gon becomes friends with Meleoron, who in return reveals the true extent of his powers and the reason why he wants the king dead. As the Hunters make adjustments in their preparations to storm the palace, the king entertains himself with board games until an unusual player appears before him.

Killua confronts Ikalgo but later, saves him from getting eaten by his own subordinates. The Ortho Siblings confront Killua in their game, a 1-501 dart game where he gets continuously attacked. After feigning death, Killua beheads his opponents in a flash, but he collapses due to extreme blood loss and Ikalgo decides to repay the favor by taking him to be treated.

Knuckle and Shoot attempt to ambush Cheetu, but at the last moment, Cheetu changes directions and vanishes.

Killua and Gon split up to stop the selection process, but Gon finds his path blocked by two new Chimera ants, an owl and a bat.