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{{Chapter summary|[[Yuto (manga)|Yuto]] attempts to catch [[Shingo Sawatari (manga)|Shingo]] off guard when he expected to be facing [[Yuya Sakaki (manga)|Yuya]]. But [[Reiji Akaba (manga)|Reiji]], suspecting the new figure to be more than he appears, instructs Shingo to capture Yuto as a possible accomplice. Shingo complies and proceeds to use Leo Corp's [[Solid Vision]] system to materialize "[[Haunted Demon Den]] " to begin an [[Action Duel]] with [[Yuzu Hiiragi (manga)|Yuzu]] watching the duel unfold from from the rooftop of a neighboring building. Despite the voice telling Yuto to move and grab as much [[Action Card]]s as he can, Shingo makes the first move and gets an Action Card while using the effect of his "[[Underworld Knight Eidos the (manga)|Underworld SquireKnight Eidos]] " to [[Tribute Summon]] "[[Angmarl the Fiendish MonarchDemon Emperor Angmar (manga)|Demon Emperor Angmar]] " to slashe Yuto’s life points in half within one turn. But Yuto retaliates by using the two "[[Phantom Knights Shade Brigandine (manga)|Phantom Knights Shade Brigandine]] " cards he set and special summoned due to their effect to [[Xyz Summon]] "[[Dark Rebellion Xyz Dragon (manga)|Dark Rebellion Xyz Dragon]] " and destroy Angmarl, Reiji having expected an [[Pendulum Summon]].

But Shingo is unfazed by the damage, using his "[[Dark Advance]] " trap to summon Angmarl back to his field so he can sacrifice the monster to summon "[[Underworld Emperor Erebus the (manga)|Underworld MonarchEmperor Erebus]] " while sending Dark Rebellion Xyz Dragon back to Yuto's extra deck and disabling Yuto. It was then Yuto hears Yuya's voice in his head asking to be tagged in, though Yuto tells the voice to shut up as he got them into this mess in the first place. But Yuya, telling Yuto to lecture him later while promising to finish the Duel, forceful regains control of their body. While everyone is shocked to see him transform from Yuto into their quarry, Yuya formally introduces himself while stating that the fun has just begun.}}