Having learned about Ai's sorrow, Playmaker tries to convince him to stop the battle. However, Ai has already made up his mind, and won't back down no matter what. As the two's battle continues to rage on, Ai makes a proposal to Playmaker.
Playmaker barely manages to fend off Ai's attacks. Having found an opening, Playmaker attempts to launch an attack against Ai. However, Ai knows Playmaker inside and out, and can predict everything he will do. Ai then unites the feelings of all the Ignises, and brings about the advent of the ultimate Cyberse monster.
After finding out where Ai is, Yusaku heads to an island located in the outskirts of Den City, all by himself. Ai has already started making copies of himself on the island, using the SOLtiS he acquired from SOL Technologies. Ai reveals his motive for attacking humans, as well as all the thoughts he's been keeping to himself. And now, with the future of the world on the line, Yusaku and Ai begin their first and final battle.
As their battle rages on, Varis is disappointed to see that Soulburner still has doubts in his heart. Enraged by this, Soulburner decides to cast aside the trauma caused by the Lost Incident, and the sadness he felt after losing Flame. With all his doubts gone, Soulburner summons a mighty conflagration to his right hand and fights against Varis with everything he’s got.
Soulburner has obtained some data about Ai. Varis then appears before Soulburner. In order to finish the battle with the Ignises once and for all, Varis attempts to take the data from Soulburner. Their previous Duel was never resolved, and now, they will have a second showdown, with the data about Ai on the line.
Roboppy uses ever-changing tactics to drive Soulburner into a corner. Unfazed by the Appliancer monsters' fierce attacks, Soulburner launches a counterattack against Roboppy. As the intense back-and-forth battle between the two rages on, something abnormal happens to Roboppy!
In order to find out where Ai, Soulburner challenges Roboppy to a Duel. Soulburner tries to convince Roboppy to find a way to coexist with humans. However, Roboppy's response to this is a sinister smile. Roboppy then says that Ai is suffering because Soulburner failed to protect Flame...
LINK VRAINS, which should have been shut down, is now open again, and many citizens of Den City begin to log in. In order to search for clues about Ai, who has taken over SOL, Soulburner decides to investigate LINK VRAINS. There, he discovers an island he has never seen before. On the island is a country filled with household appliances. Soulburner then encounters Roboppy in the country.
Akira and Blue Maiden work together to break through Ai's battle formation, but Ai then summons a new trump card and drives the two of them into a corner again. Despite Ai's intensifying attacks against them, the Zaizen siblings' bond remains strong, and they manage to summon forth a new ace monster.
Ai has discovered Akira and Blue Maiden in the network. In order to seize control of SOL Technologies system, he challenges the two of them to a Duel. The Zaizen siblings protect each other and fend off Ai's attacks. With their minds as one, the two of them launch a counterattack against Ai.
The Gore has recovered so that he can protect the children at the orphanage. He uses his Gouki monsters to launch waves of attacks against Ai. However, he keeps getting knocked down by Ai's powerful monsters. Despite this, his indomitable spirit still burns bright, and he keeps getting back up to challenge Ai. Seeing the Gore like this, Ai starts talking about what it feels like to lose one's friends.
Roboppy uses tricky tactics to drive The Shepherd and Ghost Gal into a corner. Ghost Gal is able to summon her new trump card with The Shepherd's help, and proceeds to launch a counterattack against Roboppy. Meanwhile, the Gore has managed to find the real Ai. He then begins a Duel against Ai.
Playmaker has made up his mind to fight against Ai, who is currently targeting Akira. Playmaker manages to find Ai, but it turns out that it was just a copy Ai made to buy time. His allies also encounter Ai's copies and fight against them. Meanwhile, The Shepherd and Ghost Gal encounter Roboppy, who was looking for someone to fight. They then start a Tag Duel.
Ai launched an attack against Queen. In order to steal the code necessary to infiltrate SOL's system, Ai also sent an advance warning to Akira. Playmaker is filled with conflicting emotions after learning that Ai has started attacking humans. Meanwhile, Varis installs an anti-Ignis AI known as "Pandor", and heads off to fight against Ai.
After his life-and-death battle with Bohman, Playmaker was able to free the consciousness of his allies. However, Ai, who has used up his power during the battle, as well as the other Ignises, didn't come back to Playmaker.
Ai destroys a part of the Neuron Link and enters Bohman’s program. There, he discovers the five Ignises that were absorbed. After escaping from Bohman's program, Ai entrusts his, as well as the other Ignises', final hopes and wishes to Playmaker. And now, the battle between Bohman and Playmaker enters its final phase. The future of mankind and AI all depends on this battle...
Bohman set up something called a Neuron Link to use the consciousness of humans to create his Data Storm. The three Knights, Akira, and Ghost Gal put their lives on the line in an effort to destroy this Neuron Link. They succeeded, but Bohman then started repairing the Neuron Link right afterward, leaving Playmaker in despair. Playmaker is now in a hopeless pinch. Thus, Ai decides to go for a dangerous gambit!!
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