Episode 7

"Imperial Wrath of Revolt - Dark Rebellion Xyz Dragon" (反逆の逆鱗 ダーク・リベリオン・エクシーズ・ドラゴ Hanki no Gekirin Dāku Riberion Ekushīzu Doragon), known as "Mr. Mystery" in the Dub version, is the seventh episode of the Yu-Gi-Oh! ARC-V anime.

Synopsis
Shingo, who lost to Yūya in a Duel before, hasn't forgotten the humiliation of being defeated, and plans to get his revenge, now that he has some new cards. In order to stop his scheme, Yūya's childhood friend, Yuzu, challenges him. But then a black shadow appears before the two, targeting them. The mysterious man brushes Yuzu aside and stops her from doing anything, and quietly begins his Duel with Shingo. While Shingo gets carried away with his new strategy, the mysterious man ignores him, and starts showing off a surprising power...

Shingo Sawatari vs. Kakimoto
Duel already in progress. Shingo controls "Möbius the Ice Monarch" (CG Star 6/2400/1000) in Attack Position, while Kakimoto controls "Power Darts Shooter" (CG Star 5, 5/1800/700) in Attack Position.

Shingo's turn

"Mobius" attacks and destroys "Power Darts" (Kakimoto: ? → 0 LP).

Shingo Sawatari vs. Unknown
Turn 1: Unknown

Unknown Sets 5 cards.

Turn 2: Shingo

As his opponent controls at least two Set Magic/Trap Cards, Shingo Special Summons "Escher the Vassal of the Ice Monarch" (CG Star 4/800/1000) from his hand in Attack Position via its own effect. Shingo Releases "Escher" to Advance Summon "Möbius the Ice Monarch" (CG Star 6/2400/1000). Its effect activates as it was Advance Summoned, targeting and destroying two Magic/Trap Cards the opponent controls ("Phantom Death Spear" and "Phantom Knights Shadow Veil"). As he has Advance Summoned this turn, Shingo activates "Advance Carnival", letting him Advance Summon again this turn in addition to his Normal Summon. He Releases "Mobius" to Advance Summon "Möbius the Frigid Ice Monarch" (CG Star 8/2800/1000), who can be Advance Summoned with only one Release by Releasing a Advance Summoned monster. The effect of "Mobius" activates as it was Advance Summoned, letting Shingo target and destroy three Magic/Trap Cards the opponent controls. As it was Advance Summoned by Releasing a WATER monster, the targeted cards cannot be activated in response. Unknown's Set cards (two copies of "Phantom Knights Shadow Veil" and "Cyclone") are destroyed. "Mobius" attacks directly, but Unknown activates the effect of "Phantom Knights Shadow Veil" in his Graveyard as a direct attack was declared. This lets him Special Summon as many copies of "Phantom Knights Shadow Veil" from his Graveyard as possible as Monster Cards. He Special Summons three copies (CG Star 4/0/300 each) in Defense Position. A replay occurs and "Mobius" attacks and destroys a "Phantom Knights Shadow Veil", with the effect of that card banishing it as it was sent to the Graveyard after being Summoned as a monster. Shingo Sets 1 card.

Turn 3: Unknown

Unknown overlays his two Level 4 "Phantom Knights Shadow Veil" to Xyz Summon "Dark Rebellion Xyz Dragon" (Rank Star 4/2500/2000/2 ORU) in Attack Position. He activates its effect, detaching an Overlay Unit ("Dark Rebellion": 2 → 1 ORU) to halve the ATK of a Level 5 or higher monster Shingo controls ("Mobius": 2800 → 1400/1000) and add that amount to its own ATK ("Dark Rebellion": 2500 → 3900/2000). He activates the effect again by detaching another Overlay Unit ("Mobius": 1400 → 700/1000, "Dark Rebellion": 3900 → 4600/2000/1 → 0 ORU). "Dark Rebellion" attacks and destroys "Mobius" (Shingo: 4000 → 100 LP). Shingo activates his face-down "Ice Rage Shot", destroying a monster that destroyed an Aqua-Type monster by battle and inflicting damage to the opponent equal to that monster's ATK. He targets "Dark Rebellion", but Unknown activates the effect of "Phantom Death Spear" in his Graveyard, negating the activation of and destroying the opponent's Trap Card and inflicting 100 damage to Shingo (Shingo: 100 → 0 LP).

List of Featured Characters

 * Yūto
 * Shingo Sawatari
 * Kakimoto
 * Ōtomo
 * Yamabe
 * Yūya Sakaki
 * Sora Shiun'in
 * Tatsuya Yamashiro
 * Futoshi Harada
 * Yuzu Hīragi
 * Ayu Ayukawa