"Disqualified from the WDC!? Heartland's Assassins Droite and Gauche" is the thirty-seventh episode of the Yu-Gi-Oh! ZEXAL anime. It first aired in Japan on December 26, 2011.
During the second day of WDC preliminary, Flip, who suffered from a slow start, decides to collect Heart Pieces using his "tricky ideas" expertly, however it was discovered by Droite and Gauche, the members of tournament operation committee. Due to his violation to tournament rules, Flip will be disqualified if he cannot win against those two in a Duel. Knowing this circumstance, Yuma takes his place.
Featured Duel: Yuma Tsukumo vs. Dolowa and Gauche
Turn 4: Yuma
Yuma's hand contains "Attraffic Control", another Spell Card, "Overlay Eater", and "Gagaga Gardna". Yuma Flip Summons "Rai-Rider" (1200/400) and Normal Summons "Tasuke Knight" (1700/100). "Tasuke Knight" attacks "Morpho", but Dolowa activates her face-down "Scales of Subordination", changing "Tasuke Knight" to Defense Position and equipping "Scales" to it. Once per turn, Droite may change the equipped monster's battle position.
Turn 5: Dolowa
Droite Normal Summons "Phantom Butterfly Assassin Swallowtail" (1800/???). Droite activates the effect of "Scales of Subordination", changing "Tasuke Knight" to Attack Position. This activates the effect of "Morpho", decreasing the ATK of "Tasuke Knight" by 1000, to 700 as it changed its battle position. "Morpho" attacks and destroys "Tasuke Knight (Yuma 4000 → 3500). As another monster inflicted Battle Damage, the effect of "Swallowtail" activates, decreasing the ATK of "Rai-Rider" by the amount of damage that was inflicted, to 700. "Swallowtail" attacks and destroys "Rai-Rider" (Yuma 3500 → 2400). As "Rai-Rider" battled, its effect activates, meaning that "Swallowtail" may not attack next turn. Droite Sets a card.
Turn 6: Gauche
Gauche Normal Summons "Blade Bouncer" (1800/???). "Hammer-Rush Bouncer" attacks Yuma directly, with its effect activating as Gauche controls no Spell/Trap Cards. Yuma may not activate any of his own during this battle. Yuma activates the effect of the "Gagaga Gardna" (1500/2000) in his hand, Special Summoning it in Attack Position as he is about to be attacked directly. Yuma uses the other effect of "Gagaga Gardna", discarding "Overlay Eater" to prevent its destruction in battle (Yuma 2300 → 1600). "Blade Bouncer" attacks "Gagaga Gardna", but Yuma uses the effect of "Gagaga Gardna", discarding a card in his hand to prevent its destruction in battle (Yuma 1600 → 1300). Gauche activates the effect of "Blade Bouncer", discarding "Copy Knight" to allow it to attack again. "Blade Bouncer" attacks "Gagaga Gardna", but Yuma uses the effect of "Gagaga Gardna", discarding the last card in his hand to prevent its destruction in battle (Yuma 1300 → 1000). Gauche activates the effect of "Blade Bouncer", discarding a card to allow it to attack again.
Duel continues in the next episode.
The following cards appeared in this episode. Cards in italics debuted here.