Yu - Gi - Oh ! ZEXAL - Episode 091 " Take a Chance " , formerly known as " Sibling Rivalry " and known as " Shark vs . Rio - The 100th Squabble Duel " in the Japanese version , is the ninety - first episode of the " Yu - Gi - Oh ! ZEXAL " anime . It first aired in Japan on February 17 , 2013 and in the United States on December 14 , 2013 . Summary . Yuma is running late to school and meets Bronk on his way . Bronk goes ahead of Yuma but a flock of ducks come by . He pushes his skateboard down to decelerate , resulting in him being thrown from his board but avoiding the ducks . Then , Rio arrives and asks if he is well , noticing the scrape Bronk received in his accident . Bronk gets to his feet and answers positively . As Rio helps with Bronk ' s injury by tying her handkerchief around his arm , he is surprised by her kindness . Bronk thanks Rio and Rio leaves for school with Bronk moved by Rio ' s concern . Yuma and Astral go to school on Bronk ' s skateboard . At lunch time in the classroom , Bronk is still love - struck by Rio , and his friends are at an uproar of what he should do . Everyone is attempting to dissuade him , but Ray suggests if he Duels Shark and wins , he could date Rio without any problems . Bronk then fantasizes about beating Shark and he and Rio embracing at their wedding . Bronk rushes out to go and Duel Shark . Yuma wonders what is happening . Shark , who now knows of Bronk ' s intentions , refuses the Duel , saying Bronk would never be able to beat him , then saying that he is not even at Yuma ' s level . Bronk greatly misunderstands Shark ' s words and thinks that Yuma is dating Rio . Caswell and Flip hear this exchange . Bronk then has a fantasy where Yuma and Rio are to be wed and all their friends are there for the wedding , with Astral flying around them . He then drops to his knees and thinks that Yuma is the only one that Shark will accept as Rio ' s boyfriend . Caswell and Flip are surprised . The next day , a story is printed in the school publication on how Yuma and Rio are allegedly dating and that he is the only one Shark approves of . Many boys are crying , now that Rio is apparently in a relationship . The story is the most discussed topic in the school . Tori is surprised , but Caswell and Flip say that they heard it from Shark . Caswell says that Rio and Yuma are " a most sensational couple " , which angers Tori and Cathy . Bronk calls Yuma to the roof to talk about Rio . Yuma is oblivious to Bronk ' s misconceptions and does not even know about the story . Bronk speaks about how he sees Yuma as his best friend . Bronk then says that if Yuma breaks Rio ' s heart , there would be consequences . Yuma still does not understand , but Bronk continues . Bronk says that Shark approves of . Then Rio appears , and from what she has heard , assumes that Shark began the rumor . Everyone goes to the tennis court to confront Shark . At the tennis courts , Rio talks to shark telling him that this is not okay , Shark responds by saying that he has no idea what Rio is talking about . He starts to leave , but then Rio mocks him by telling everyone that he has a strange fear of onions and threatens to tell Flip to blog about it all over the school net , causing Shark to stop and duel Rio . After the duel , the truth is told as Shark says that he will duel Bronk , if he was at Yuma ' s level of dueling , shock the latter himself . Hearing the truth , both Caswell and Flip realized that they misunderstood the conversation . Bronk asked Rio to have a duel , which she accepts . Before Caswell and Flip sneak off , they were asked by Rio to have time to talk , which shook them in fear and run off ( the dubbed version of the episode ends just before they run off ) . Yuma asked what was the Dueling squabble all about , but was told by Tori and Cathy that there is no need to know as they pinch his butt cheeks , while Yuma has no idea about it . Featured Duel : Rio Kastle vs . Reginald " Shark " Kastle . Turn 1 : Shark Shark Normal Summon s " Big Jaws " ( 1800 / 300 ) . As he Normal or Special Summon ed a Fish - Type monster , he Special Summons " Shark Stickers " ( 200 / 1000 ) from his hand via its own effect . He overlays his two Level 3 monsters to Xyz Summon " Submersible Carrier Aero Shark " ( 1900 / 1000 ) in Attack Position . Shark activates the effect of " Aero Shark " , detach ing an Overlay Unit ( " Aero Shark " ORU 2 → 1 ) to inflict 400 damage to his opponent for each card in his hand . Rio Special Summons " Guard Penguin " ( 0 / 1200 ) from her hand in Attack Position via its own effect by reducing the damage to 0 . Shark activates the Field Spell Card , " Aqua Gate " , which will let him negate a number of attack s per turn equal to the number of Set Spell and Trap Card s he control s . Shark Sets two cards . Turn 2 : Rio Rio Normal Summons " Blizzard Falcon " ( 1500 / 1500 ) . She overlays her two Level 4 monsters to Xyz Summon " Ice Beast Zerofyne " ( 2000 / 2200 ) in Attack Position . Rio activates the effect of " Zerofyne " , detaching an Overlay Unit ( " Zerofyne " ORU 2 → 1 ) to negate the effects of all other cards on the field until her next Standby Phase , while having one of her opponent ' s monsters lose 300 ATK for each negated card . " Aero Shark " loses 600 ATK , since two cards were negated ( 1900 → 1300 ) . She equip s " Zerofyne " with " Wings of Silence " , increasing its ATK by 300 ( 2000 → 2300 ) and causing it to be unaffected by the effects of the opponent ' s Spell and Trap Cards . " Zerofyne " attacks and destroy s " Aero Shark " ( Shark 4000 → 3000 ) . As a WATER Xyz Monster he controls was destroyed by battle , Shark activates his face - down " Ghost Salvage " , letting him Special Summon that monster and its Overlay Units from the Graveyard with their effects negated . He Special Summons " Aero Shark " ( 1900 / 1000 ) , " Big Jaws " ( 1800 / 300 ) and " Shark Stickers " ( 200 / 1000 ) . Next , Shark activates his face - down " Full Armored Xyz " , letting him target an Xyz Monster he controls and Xyz Summon another Xyz Monster . He can then equip the target to the newly Summoned monster , increasing its ATK by the ATK of the equipped monster . He targets " Aero Shark " , then overlays his two Level 3 monsters to Xyz Summon " Black Ray Lancer " ( 2100 / 600 ) and equip it with " Aero Shark " . Rio Sets a card . Turn 3 : Shark Shark activates " Break Stream " , letting him target an Xyz Monster he controls and prevent the opponent from activating Spell and Trap cards when that monster attacks . In addition , each time it destroys an opponent ' s monster by battle this turn , he can destroy a Spell or Trap Card the opponent controls . He targets " Black Ray Lancer " . " Black Ray Lancer " attacks and destroys " Zerofyne " ( Rio 4000 → 2300 ) , destroying Rio ' s Set card . It is " Ice Fire Egg " , which activates when it is destroyed . Rio may Special Summon a WATER Xyz Monster from her Graveyard , whose ATK and DEF will be reduced to 0 . It will also be treated as having a Level one higher than its original Rank . She Special Summons " Zerofyne " ( 0 / 0 ) . Shark Sets a card . Turn 4 : Rio Rio draws and activates the Field Spell Card " Land of Frozen Flames " which will allow both players to treat a WATER monster as two Overlay Units when Xyz Summoning . Treating " Zerofyne " as two Overlay Units now , Rio overlays it to Xyz Summon " Ice Princess Zereort " ( 2500 / 2100 ) in Attack Position . Rio activates the effect of " Zereort " , detaching the overlaid " Zerofyne " ( " Zereort " ORU 1 → 0 ) to reduce the ATK of " Black Ray Lancer " to 0 ( 4000 → 0 ) . " Zereort " attacks " Black Ray Lancer " ( Shark 3000 → 500 ) , but Shark activates the effect of " Full Armored Xyz " , send ing the equipped " Aero Shark " to the Graveyard to prevent the destruction of " Black Ray Lancer " by battle " ( " Black Ray Lancer " 4000 → 2100 ) . Turn 5 : Shark Shark Normal Summons " Drill Barnacle " ( 300 / 0 ) . He then equips " Black Ray Lancer " with his face - down " Xyz Crown " , letting him treat it as a Level 3 monster and allowing it to be treated as two Overlay Units for an Xyz Summon . " Drill Barnacle " is also treated as two Overlay Units via the effect of " Land of Frozen Flames " . Shark overlays his two Level 3 monsters treated as four to Xyz Summon " Shark Caesar " ( 1800 / 2000 ) in Attack Position . Shark activates the effect of " Shark Caesar " , detaching an Overlay Unit ( " Shark Caesar " ORU 2 → 1 ) to increase its ATK by the original number of Overlay Units required to Xyz Summon it minus the current number of Overlay Units attach ed to it x 1000 . ( 1800 → 4800 ) . " Shark Caesar " attacks and destroys " Zereort " ( Rio 2300 → 0 ) . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .