Yu - Gi - Oh ! ARC - V - Episode 010 " You Show ' Em " , known as " Knight of the Secret Stone ! Fusion User " Masumi Kotsu " in the Japanese version , is the tenth episode of the " Yu - Gi - Oh ! ARC - V " anime . It first aired in Japan on June 15 , 2014 and in Canada on October 3 , 2015 . It became available with official subtitles via Crunchyroll on November 15 , 2016 . Summary . Yuya recaps that LID suddenly appeared and challenged them to a best - of - three match with You Show Duel School on the line . Yuya ' s first match was against Dipper O ' rion of LID ' s Xyz Course , who was a tough opponent , but Yuya managed to pull it out and get their first win . Yuya exits the Duel Field , only to be immediately mobbed by Ally , Tate , and Frederick , who hug him and congratulate him , bringing him down to the floor . Gong also tearfully congratulates him , as expected of his best friend ( in the dub , Gong exclaims he ' s never been happier than during his birthday ) . He tightly hugs Yuya , moved by the victory . Yuya chokes , telling him that he ' s welcome . Zuzu watches them , but when Yuya turns to her , she sees the face of the Duelist that looks like Yuya . Yuya tells her that she ' s up next , and Zuzu agrees . Their You Show Duel School is riding on this Duel after all , and she ' ll definitely win it . Meanwhile , Henrietta scolds Dipper for his loss , but she thinks that now she wants Pendulum Summon ing even more . She tells the girl that is with them that she ' s up next . The girl introduces herself as Julia Krystal of the Fusion Course . Sora is quite interested to hear that as he munches on biscuit sticks . Julia arms her Duel Disk , asking which of them will be her opponent , and Zuzu declares that she will be . She thinks that with You Show Duel School on the line , she can ' t lose . But her thoughts are still drifting towards the Duelist , and she ' s startled when Julia begins chuckling . The duo adjourn to the Duel Field , and Skip muses that a field suitable for his cute daughter would be this , the Field Spell Card " Crystal Corridor " . A corridor full of gems and mirrored pillars , carpeted with a pink rug , materializes , and Skip claims to have picked a field that perfectly matches her dazzling cuteness ( in the dub , Skip picked the field to show off Zuzu ' s sparkling skills ) , telling her to shine on to her heart ' s content . Zuzu is embarrassed by her father , but Julia gets her attention by commenting that calling someone like Zuzu dazzling is incredible nepotism ( in the dub , Julia says she knows better when Skip called Zuzu a sparkling jewel ) . Zuzu isn ' t happy , as Julia claims that Zuzu ' s eyes have no luster ( in the dub , Julia accuses Zuzu for being a fake , refusing to reveal the truth about Yuya ) . Zuzu asks her where that came from , and Julia explains that her father is a jeweler , thus she ' s seen plenty of real gems growing up . That ' s why she can tell that Zuzu has no shine to her , proof that there is hesitation in her heart . Zuzu flinches , remembering the Duelist again , but she tells Julia to say whatever she wants , Zuzu will prove whether or not there ' s hesitation in her heart with this Duel . Yuya begins the Action Duel chant , declaring " Duelists locked in battle ! " Gong bellows , " Kicking against the earth and dancing in the air alongside their monsters ! " " They storm through this field ! " Yuya calls . The three kids all cheer " Behold ! This is the newest and greatest evolution of Dueling ! Action ! " Zuzu and Julia yell " DUEL ! " and Frederick snaps his fingers to scatter the Action Card s . Julia goes first , activating the Spell Card " Gem - Knight Fusion " from her hand . It allows her to Fusion Summon a " Gem - Knight " Fusion Monster using monsters in her hand . Yuya is surprised that monsters that haven ' t been Summoned can be fused , and Sora explains that Hand Fusion uses a Spell Card to use monsters in the hand as Fusion Material s ( their remarks are cut from the dub ) . Julia fuses " Gem - Knight Tourmaline " and " Gem - Knight Emerald " , chanting " Gem tinged with lightning ! Brilliant emerald of good fortune ! In whirlpool of light combine to bring forth a new dazzling radiance ! Fusion Summon ! Come forth , one who pursues victory ! Gem - Knight Topaz ! " ( " Stone warrior in armor of lightning ! Gleaming green knight of good fortune ! Meld your might to make your light blinding bright ! Fusion Summon ! Say hello to Gem - Knight Topaz ! " in the dub ) Zuzu can ' t believe that Julia could Fusion Summon on her first turn , and Julia observes that even with her own lack of radiance , Zuzu can understand how great Hand Fusion is ( in the dub , Julia tells Zuzu she doesn ' t stand a chance of winning and saving You Show ) . Zuzu thinks that " Topaz " only has 1800 ATK , and is by no means unbeatable . Julia warns her not to underestimate " Topaz " , as how Zuzu deals with it will decide her fate . She Set s a card and ends her turn . Zuzu declares her turn and she draws " Mozarta the Melodious Maestra " . She activates the Spell Card " 1st Movement Solo " , allowing her to Special Summon a Level 4 or lower " Melodious " monster from her hand since she controls no monsters . She tells " Aria the Melodious Diva " that she ' s up , as the Fairy - Type monster appears , and then , since she has a " Melodious " monster on her field , she can Special Summon " Sonata the Melodious Diva " from her hand . Zuzu declares that the concert begins , and as both her monsters sing , Zuzu Tributes both of her monsters , who rise into the heavens and then join hands , vanishing in a puff of green dust , as Zuzu chants " Enchanting melody that echoes through the heavens , awaken the sleeping virtuoso ! Come forth , Level 8 Mozarta the Melodious Maestra ! " The kids cheer at the sight of Zuzu ' s ace monster , but Zuzu isn ' t done yet . She activates the effect of " Mozarta " to Special Summon a Level 4 or lower " Melodious " monster from her hand . " Mozarta " fires a beam of green light from her hand and Zuzu tells " Canon the Melodious Diva " to come onto the stage , and then declares her Battle Phase . First she attacks " Gem - Knight Topaz " with " Mozarta " , and " Mozarta " blasts its " Graceful Wave " at " Topaz " , destroying it . Zuzu asks Julia , whose LP has dropped to 3200 , how that was , this is how Zuzu will deal with Julia ' s monsters . Julia doesn ' t reply , so Zuzu has " Canon " attack directly , the blast pushing Julia backward and reducing her to 1800 LP . The kids cheer , Frederick getting his shivers , and Yuya encourages Zuzu . Julia dusts herself off , commenting that it seems Zuzu has some skill , but she shouldn ' t think that she ' s won just yet . Zuzu calls Julia a sore loser , and Julia replies that Zuzu will understand whether she ' s a sore loser or not in the next turn . Activating the effect of " Canon " to switch itself into Defense Position , Zuzu ends her turn . Julia draws and subsequently Summons " Gem - Knight Alexandrite " . She activates its effect , Tributing it to Special Summon a " Gem - Knight " from her Deck . She brings out the 2450 ATK " Gem - Knight Crystal " , though as Zuzu notes , it doesn ' t have enough ATK to match the 2600 ATK of " Mozarta " . Julia simply activates her Trap Card , " Fragment Fusion " , banishing Fusion Materials from her Graveyard to Fusion Summon a " Gem - Knight " monster . She banishes " Tourmaline " , " Emerald " , and " Alexandrite " , something that Sora picks up on . He comments that now she actually looks pretty good ( in the dub , Sora also comments on how Julia isn ' t as good as the chocolate stick he ' s having ) . Julia chants " Gem with facets of noon and night ! Gem tinged with lightning ! Brilliant emerald of good fortune ! In whirlpool of light combine to bring forth a new dazzling radiance ! Fusion Summon ! Appear now , one who illuminates all with its supreme radiance ! Gem - Knight Master Diamond ! " ( " Magical rock of dark and light ! Stone warrior in armor of lightning ! Gleaming green knight of good fortune ! Combine your brilliance to forge a blinding new brightness ! I Fusion Summon the mighty Gem - Knight Master Diamond ! " in the dub ) As the mighty " Gem - Knight " plants its sword in the ground behind her , Julia explains that it is her true ace monster . She then activates the effect of " Master Diamond " to banish " Topaz " from the Graveyard , and Zuzu is confused as to why . Yuya tells Zuzu to be on her guard , but she sees him as the masked Duelist again , who tells her that Julia is planning something . Zuzu is completely rattled , and Julia notes that she ' s pretty carefree if she thinks that she has time to look away ( in the dub , Julia asks if Zuzu ' s eyes are playing tricks on her ) . Declaring her Battle Phase , she has " Crystal " attack " Canon , " and the " Gem - Knight " fires a blast of crystals from its shoulders , destroying " Canon . " Declaring that the real deal is coming , Julia has " Master Diamond " attack " Mozarta , " and " Master Diamond " charges as " Mozarta " raises her wand . " Master Diamond " bisects " Mozarta , " reducing Zuzu to 3700 LP . Ally cries that Zuzu ' s ace monster got taken out , but Frederick points out that there was only 300 damage . Julia corrects him : since before the Battle Phase , she activated the effect of " Master Diamond " , allowing it to banish a Level 7 or lower " Gem - Knight " Fusion Monster from her Graveyard to have " Master Diamond " gain its name and effects . Zuzu realizes that this it why Julia banished " Topaz . " Julia explains that a monster destroyed in battle with " Topaz " deals its ATK as damage to its controller , and " Master Diamond " blasts a wave of light from its hand , throwing Zuzu backwards and reducing her LP to 1100 . Skip tearfully begs his daughter to keep burning and be hot - blooded , and Tate looks doubtful . Gong points out that Zuzu still has some LP left , but Sora claims that it ' s over with this . Julia explains that the second inherited effect of " Topaz " will allow " Master Diamond " to attack twice during the Battle Phase . The watching Yuya , Gong and kids realize that Zuzu will lose , as Sora pointed out . Vision blurring , Zuzu knows that she ' ll lose if this keeps up , and she spots an Action Card . As Julia declares her direct attack , Zuzu dives for the card , events slowing down - and her hand bounces off a pillar ; she had been trying to grab a reflection . Zuzu is horrified , and Julia observes that Zuzu ' s eyes must be quite clouded to be deceived by a reflection in the crystals . Zuzu turns just in time for the blast of light from the sword of " Master Diamond " to hit her , blasting her backward with a scream . Landing in a heap , her LP fall to zero . Julia ' s win portrait pops up and the Field vanishes . Sora comments that in the end , Zuzu still lost ( in the dub , Sora calls the Duel boring in the end ) , as Yuya runs to the field . But of course , Henrietta comments , and Dipper angrily grits his teeth . Zuzu opens her eyes to see the face of the masked Duelist , which fades into that of Yuya , calling her name . He asks her if she ' s hurt , and she replies that she isn ' t , but stumbles as she gets up and falls into Yuya ' s arms . Yuya asks if she ' s sure that she ' s okay , but Zuzu isn ' t listening , asking herself what she ' s doing . Yuya is right here , he ' s definitely right here , but she didn ' t believe the Yuya right in front of her and worried on her own . She remembers the masked Duelist ' s arrival and unmasking , and sees his and Yuya ' s images superimposed on one another . Zuzu thinks that it ' s just like Julia said ; she was deceived by her imagination . Julia comments that that ' s quite the show that Yuya and Zuzu are giving them , and Zuzu blushes bright red and shoves Yuya off her . Yuya hits the floor sharply , caught completely off - guard , and gets up rubbing his tailbone and asking what that was for . Zuzu apologizes , and Yuya comments that she didn ' t have to push him if she was apologizing ( in the dub , Yuya says his back wouldn ' t be as forgiving to Zuzu as he is ) . Zuzu protests that it was an important Duel , but Yuya reassures her that all they have to do is win the next one . Someone asks them if they really think it will be that easy : it ' s the third Duelist from LID , the Synchro Course representative Kit Blade . Kit asks who ' s going to be his opponent . The kids go over the situation : Yuya won and Zuzu lost , putting the score at 1 - 1 . Gong bristles ; he ' d avenge Zuzu if he could , but with this being a match between You Show Duel School and LID , and Gong being the successor to the Strong Dojo means that he ' s an outsider . He encourages Sora to win , but Sora , not a fan of such stifling things , tells " Little - Gon " ( " Big Brows " in the dub ) that he can go out in the next Duel . Gong angrily repeats the name , but then realizes what Sora just said . Sora comments that , looking over at the exercising Kit , he won ' t be a good matchup with him . Yuya tells Gong to win , confident that he won ' t have to worry if it ' s his best friend Dueling . Touched by Yuya ' s words , Gong goes up in flames , vowing to win with the Strong Dojo ' s Steadfast Dueling ( in the dub , Gong swears to beat Kit like a drum at homecoming ) . He ' s interrupted by Kit , who asks how long they ' re going to make him wait or are they scared and going to forfeit ? Furious at being called a coward , Gong arms his Duel Disk , explaining that he shall be Kit ' s opponent . Tapping his wooden katana on his shoulder , Kit warns Gong that if they think he ' s the same as the two goody - two - shoes they just fought , they ' ll be finding themselves hurting . Because unlike them , Kit is actually strong . Dipper isn ' t happy that Kit is talking about them like weaklings , and Julia agrees that it ' s annoying , but since Dipper lost , he ' s can ' t blame Kit , can he ? ( in the dub , Dipper believes that Kit was referring to him and Julia , but Julia states that Kit was only referring to Dipper ) Dipper freezes up and goes white , retreating to the corner in shame . In the operating booth , Skip muses that the opponent this time is Kit Blade , thinking " blade . . . katana . . . sword . . . " ( " Yaiba " can be translated as " blade " in Japanese ; in the dub , Skip notices that Kit has a sharp tongue , one that ' s as sharp as a sword ) and then decides on an Action Field , activating the Field Spell " Sword ' s Cemetery " . A wasteland with swords and dead trees littered about the landscape appears , with Gong standing on a low rise . Skip encourages Gong to use this graveyard of swords to bury his opponent ' s blade . Henrietta and Skip reiterate the terms of the best - of - three : If LID win , Yuya Sakaki will become part of LID , but if You Show wins , LID isn ' t allowed to meddle with Yuya again . Everyone watches tensely ( except Dipper , who ' s still sulking in the corner ) - including the concealed Declan . Against a fiery background , Skip chants " Duelists locked in battle ! " while in front of an ice one , Henrietta declares , " Kicking against the earth and dancing in the air alongside their monsters ! " " They storm through this Field ! " Skip cries . " Behold ! This is the newest and greatest evolution of Dueling ! " Henrietta cries . Yuya and Zuzu call " ACTION ! " and Gong and Kit declare " DUEL ! " The Action Cards scatter , and Gong goes first , Summoning " Superheavy Samurai Kabuto , " then ending his turn . Kit calls the Summoning of a 1000 ATK monster a wasted move , but Gong replies that truly strong men make no wasted moves ( in the dub , Gong remarks that it ' s not how strong the monsters are , it ' s how one uses them ) . Kit calls him a blockhead and tells him to do whatever he wants ( in the dub , Kit says Gong is digging himself a hole there ) . He draws a card , " XX - Saber Fulhelmknight " , and then Summons another monster , " XX - Saber Boggart Knight " . When " Boggart Knight " is Normal Summon ed , Kit can Special Summon a Level 4 or lower " X - Saber " monster from his hand , and he Special Summons the Level 3 Tuner monster , " XX - Saber Fulhelmknight " . Yuya is surprised , having not seen a Tuner monster before . But the Special Summon has activated the effect of " Kabuto " , allowing it to change to Defense Position and gain 500 DEF until the end of the turn . " Kabuto " generates a blue spherical field , rising to 2500 DEF . Gong comments that it ' s too bad , since " Kabuto " could have been defeated if Kit didn ' t Special Summon . He warns Kit that in this Duel , the one who makes needless moves will lose . Yuya cheers Gong on , telling him to show Kit his Steadfast Dueling . Kit asks what it is , since he ' s just getting started . When there are two or more " X - Saber " monster on the field , he can Special Summon " XX - Saver Faultroll " from his hand . Tate is shocked that Kit Summoned three monsters so quickly . Kit tells them to save their surprise until after they see " this " . He tunes the Level 4 " XX - Saber Boggart Knight " with the Level 3 Tuner monster " XX - Saber Fulhelmknight " . " Fulhelmknight " swings its chain blade in a spiral around it , bursting into three motes of light that become green rings of light . Kit chants " Wielder of crossed blades of light ! Trample over this mountain of corpses ! " as the rings pass over " Boggart Knight " in a cylinder , causing it to fade into a golden outline and revealing four motes of light . The light motes arrange themselves into a line , electricity crackles over the area of each ring , and a line of light shoots down the rings as Kit declares a Synchro Summon . He chants " Come forth ! Level 7 ! X - Saber Souza ! " No one present knows the Summon , and Henrietta explains that by tuning Synchro Materials with a Tuner monster , one can call forth a monster whose Level is equal to their sum from the Extra Deck . This is Synchro Summoning ( Henrietta ' s explanation is cut from the dub ) . Yuya realizes that Yaiba combined a Level 4 and Level 3 monster to Summon a Level 7 monster . Kit confirms it , but there ' s still more to come : " XX - Saber Faultroll " can , once per turn , Special Summon a Level 4 or lower " X - Saber " monster from his Graveyard . Stabbing its blade into the ground , " Faultroll " revives " XX - Saber Fulhelmknight " . Skip is horrified that Kit revived a Tuner already used in a Synchro Summon , and Zuzu realizes that Kit is going to Synchro Summon again . Kit agrees , tuning the Level 6 " XX - Saber Faultroll " with the Level 3 " Fulhelmknight . " He chants " Let your silver armor shine ! Crush the hope of all who oppose you ! Synchro Summon ! Come forth ! Level 9 ! XX - Saber Gottoms ! " As Kit stands with the two powerful Synchro Monster s , Yuya is impressed and shocked that Kit could Synchro Summon twice in the same turn . Both Kit and Gong stare each other down as the wind blows in the field . Featured Duels . Zuzu Boyle vs . Julia Krystal . At the start of the Duel , the Field Spell Card " Crystal Corridor " is activate d , as per the rules of an Action Duel . It will allow the players to use Action Card s , but they may only have one in their hand at a time . Turn 1 : Julia Julia activates " Gem - Knight Fusion " , fusing the " Gem - Knight Emerald " and " Gem - Knight Tourmaline " in her hand to Fusion Summon " Gem - Knight Topaz " ( 1800 / 1800 ) in Attack Position . Julia Set s a card . Turn 2 : Zuzu Zuzu draw s " Mozarta the Melodious Maestra " . As she control s no monsters , she activates " 1st Movement Solo " , letting her Special Summon a Level 4 or lower " Melodious " monster from her hand . She Special Summons " Aria the Melodious Diva " ( 1600 / 1200 ) in Attack Position . As she controls a " Melodious " monster , Zuzu Special Summons " Sonata the Melodious Diva " ( 1200 / 1000 ) from her hand in Attack Position via its own effect . She Tribute s " Aria " and " Sonata " to Tribute Summon " Mozarta " ( 2600 / 2000 ) . Zuzu activates the effect of " Mozarta " , letting her Special Summon a " Melodious " monster from her hand . She Special Summons " Canon the Melodious Diva " ( 1400 / 2000 ) in Attack Position . " Mozarta " attacks and destroy s " Topaz " ( Julia : 4000 → 3200 LP ) . " Canon " attacks directly ( Julia : 3200 → 1800 LP ) . Zuzu activates the effect of " Canon " , switching it to Defense Position . Turn 3 : Julia Julia draws " Gem - Knight Alexandrite " and subsequently Normal Summon s it ( 1800 / 1200 ) . She activates the effect of " Alexandrite " , allowing her to Tribute it to Special Summon a " Gem - Knight " Normal Monster from her Deck . She Special Summons " Gem - Knight Crystal " in Attack Position ( 2450 / 1950 ) . Julia activates her face - down " Fragment Fusion " , letting her banish Fusion Material Monster s listed on a " Gem - Knight " Fusion Monster , and then Fusion Summon that monster , but it will be destroyed during the End Phase . She banishes " Alexandrite " , " Emerald " , and " Tourmaline " to Fusion Summon " Gem - Knight Master Diamond " in Attack Position ( 2900 / 2500 ) . She activates the effect of " Master Diamond " , letting her banish a Level 7 or lower " Gem - Knight " Fusion Monster from her Graveyard to have " Master Diamond " gain its name and effects . She banishes " Topaz " . " Crystal " attacks and destroys " Canon " . " Master Diamond " attacks and destroys " Mozarta " ( Zuzu : 4000 → 3700 LP ) . Due to the inherited effect of " Topaz " , Zuzu takes damage equal to the ATK of the destroyed monster ( Zuzu : 3700 → 1100 LP ) . Due to the other inherited effect of " Topaz " , " Master Diamond " can make a second attack . Zuzu attempts to find and activate an Action Card , but it ends up being the reflection of a card behind her . " Master Diamond " attacks directly ( Zuzu : 1100 → 0 LP ) . Gong Strong vs . Kit Blade . At the start of the Duel , the Field Spell Card " Sword ' s Cemetery " is activate d , as per the rules of an Action Duel . It will allow the players to use Action Card s , but they may only have one in their hand at a time . Turn 1 : Gong Gong Normal Summons " Superheavy Samurai Kabuto " ( 1000 / 2000 ) . Turn 2 : Kit Kit draws " XX _ Saber Fulhelmknight " . He Normal Summons " XX - Saber Boggart Knight " ( 1900 / 1000 ) . As it was Normal Summoned , its effect activates , letting Kit Special Summon a Level 4 or lower " X - Saber " monster from his hand . He Special Summons " Fulhelmknight " ( 1300 / 1000 ) in Attack Position . As the opponent Special Summoned a monster , Gong activates the effect of " Kabuto " , switching it to Defense Position and increasing its DEF by 500 ( " Kabuto " : 1000 / 2000 → 2500 ) until the end of this turn . As he controls two or more " X - Saber " monsters , Kit Special Summons " XX - Saber Faultroll " ( 2400 / 1800 ) from his hand in Attack Position via its own effect . Kit tunes the Level 4 " Boggart Knight " with the Level 3 Tuner monster " Fulhelmknight " to Synchro Summon " X - Saber Souza " ( 2500 / 1600 ) in Attack Position . Kit then activates the effect of " Faultroll " , allowing him to Special Summon a Level 4 or lower " X - Saber " monster from the Graveyard once per turn . He Special Summons " Fulhelmknight " . He then tunes the Level 6 " Faultroll " with the Level 3 Tuner monster " Fulhelmknight " to Synchro Summon " XX - Saber Gottoms " ( 3100 / 2600 ) in Attack Position . Featured cards . The following cards appeared in this episode . Cards in italics debuted here .