Higuma appears before Hiyori after she saved Teruto and reunited with Sakura. Higuma thanks Hiyori who defeated the "King." Moreover, he brandishes what he "obtained" to Hiyori and her friends. It's Naomitsu and Kikka, but… Did he steal Kikka's magical power again?! Higuma tells a fuming Teruto the reason he steals magical power, why he was holding a Rebuild Battle, why he had to place a human sacrifice as king, and what Higuma's objective is. Neo Kyoto's reconstruction progresses, and the final battle begins!

Hiyori is finally reunited with Teruto. But Teruto seems strange. While he is appreciative of Hiyori's hard work, he also states that he wants Hiyori's power. "It's the same as when Kikka was…?!" thinks Hiyori who decides to take on Teruto in battle. With the days she wanted to reclaim for the past three years, Hiyori resolves to save Teruto. However, Teruto says he isn't asking for any kind of help... Is this the real Teruto in front of her? Just then, Hiyori asks a certain question...

Waiting for Hiyori and her friends to reach the Tower are two giant KUGE statues. Kikka and Naomitsu tell Hiyori to go ahead towards Teruto while they gear up to take down the statues. However, standing before Naomitsu is his "sibling," while in front of Kikka stands Kikka herself when she was King. Even as an illusion, Naomitsu cannot do anything because he does not want to fight his "siblings." Kikka, blamed for the things she did when she was King, also is unable to demonstrate her usual strength. Will they both be defeated as they are? Just then, who appeared in front of Naomitsu...? And what came to Kikka's mind...?

Reira competes in the battle against Higuma, with whom she still has a score to settle. Thanks to his new body, he is more powerful than ever and Reira's skills are put to the test. She reveals how it happened that years ago she disappeared without a trace and Rinpu was appointed protector.

The one Ohkura summoned as support was Mikhail Saiki. Hiyori was taken aback by their reunion, but immediately begins a battle against Mikhail. Hiyori asks what happened to Mikhail who changed from three years ago and seems more apathetic. Mikhail solemnly talks about the past, but Hiyori is not convinced by the details. She claims that the Mikhail from before had true strength. And then, when she asks about the person who he wishes to defeat, an unexpected name leaves Mikhail's mouth...

Hiyori's team won the tag team battle against Naomitsu's team. But even with pleas for the two of them to be saved, there is no change in Naomitsu or Rinpu's state of mind. However, a mysterious person appears and attacks Naomitsu and Rinpu. Hiyori and her friends are wary for a moment, but thanks to the attack, the two return to their usual selves. According to the mysterious person, Naomitsu and Rinpu had been brainwashed. From there, they return to the hideout where Hiyori asks Naomitsu about the current situation. What in the world happened up until this point? Naomitsu tells the story of how it all began...

The new enemies that attacked the city are revealed as Naomitsu and Rinpu. Moreover, they claim they have no memory of Hiyori and the others. Placed into a barrier, Hiyori's group has a tag team battle versus Naomitsu and Rinpu. However, because this is her first tag team battle, Hiyori is pushed to the brink. Somehow, Hiyori wants to save Naomitsu and Rinpu in collaboration with Kikka. But when she asks Kikka to work together with her, Kikka simply says she’ll handle it as though she wants to push Hiyori away...

Teruto is down after his fight with Kikka and looks like he's given up on the fight against the King. While Teruto decides to go fishing, Sakura and Hiyoko go out for cake, with the idea of coming up with a plan to get him to regain his spirits.

Teruto, Sakura and Hiyoko go to a resort with an artificial beach. While enjoying the opportunity to relax and forgetting about the battles, Sakura becomes tormented by a girl. When the girl's identity is finally revealed, a battle ensues!

Teruto starts "training" Hiyori by going to various bakeries in the city. They decide to go after a special croissant, but are attacked by a mysterious girl. Meanwhile, Sakura looks for a challenger for them, but feels she's being somehow deceived.

Teruto is close to getting the key chips needed to face the King. And he does everything to get it. However, in his path appears Mikhail, who is also a key chip away from forming the key. Will Teruto be able to beat him?

Teruto's battle against Kikka continues, but will he be able to win? Teruto has reached the end of his path, but will he be able to save the people he cares about?

Higuma's objective is to become "WILL," a higher-dimensional being. For that purpose, it was necessary to have the Neo Kyoto citizens compete in Build-Divide to increase their magical power and set the person with the highest magical power and strength in Build-Divide as "King," making them the greatest, so Higuma and the King themselves can fuse. And to top it off, Higuma enjoys the battle with Teruto. By drawing out Teruto's power, fighting him, and merging their powers, Higuma plans to become "WILL." However, Teruto bravely resists. At a critical point in a desperate situation, just then, calling out to Teruto is...

Neo Kyoto is a city with an AR infrastructure and ruled by the King but is also a world where the social and economic status of a person is determined solely by their skills in a game called Build-Divide. One day, Teruto Kurabe is wandering around the city with a piece of bread in his hand, and discovers a girl named Sakura Banka who is being attacked by a thug, so he uses the power of a mysterious card in his possession to save her. Witnessing his powers, Sakura speculates that Teruto must be highly skilled in Build-Divide and requests a battle with him. She has been searching for a powerful player that could help her win through the Rebuild Battles, which would allow her to challenge the King. However, Teruto has lost all his memories…