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{{episode summary|The [[Arc League Championship]] finally kicks off. Following [[Frederick]]'s smooth victory as the first representative for [[You Show Duel School]], [[Allie]] is next to Duel for the Youth. Allie's opponent is [[Riley Akaba|Riley]], known as "The Treasure of [[Leo Institute of Dueling]]". In contrast of the enthusiastic Allie who receives the support of everyone, Riley seems to be afraid of something. While [[Declan Akaba|Declan]] and [[Henrietta Akaba|Henrietta]] watch, Riley utilizes a strange strategy to copy AllyAllie's monsters.}}

At the start of the [[Duel]], the [[Field Spell Card]] "{{TooltipA|[[Sun Valley}}]]" 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.

[[Allie]] [[Normal Summon]]s "{{TooltipA|[[Aquaactress Guppy (anime)}}|Aquaactress Guppy]]"(600/600). She activates the [[Continuous Spell Card]] "{{TooltipA|[[Aquarium Stage (anime)}}|Aquarium Stage]]", preventing her [[WATER]] [[Monster Card|monsters]] from being [[destroyed by battle]] except by other WATER monsters. She then activates the [[Continuous Spell Card]] "{{TooltipA|[[Aquarium Set (anime)}}|Aquarium Set]]", increasing the [[ATK]] of all "[[Aquaactress]]" monsters on the [[field]] by 600 ("Guppy" 600 → 1200). Allie finally activates the Continuous Spell Card "{{TooltipA|[[Aquarium Lighting (anime)}}|Aquarium Lighting]]", doubling the ATK of all "Aquaactress" monsters until the end of the [[Battle Phase]] when they [[battle]] another monster. Allie calls for the [[attack]] of "Guppy", but is unable to since the Battle Phase can't be conducted during the first turn. Allie [[Set]]s a card.

[[Riley Akaba|Riley]] activates "{{TooltipA|[[Shutter Layer 1}}]]", [[Target|targeting]] a monster Allie controls and [[Special Summon]]ing the former as a [[Normal Monster]] with the same name, [[Type]], [[Attribute]], [[Level]], [[ATK]], and [[DEF]]. He targets "Guppy", Summoning "Layer 1" as a copy of that card (600/600). By the effect of "Aquarium Set", it gains 600 ATK (Riley's "Guppy" 600 → 1200). Riley [[Set]]s a card.

Allie Normal Summons "{{TooltipA|[[Aquaactress Tetra (anime)}}|Aquaactress Tetra]]" ("Tetra" 300 → 900/300). She finds the Action Card "{{TooltipA|[[Sunshine Smile}}]]". Allie's "Guppy" attacks Riley's, and she activates "Sunshine Smile", increasing the ATK of her "Guppy" by 400 until the end of the Battle Phase (Allie's "Guppy" 1200 → 1600). During the [[Damage Step]], "Aquarium Lighting" doubles the ATK of both "Guppy" (Allie's "Guppy" 1600 → 3200, Riley's "Guppy" 1200 → 2400). Riley's "Guppy" and "Layer 1" are destroyed (Riley: 4000 → 3200 LP). "Tetra" attacks [[direct attack|directly]] (Riley: 3200 → 2300 LP).

Riley activates the Continuous Spell Card "{{TooltipA|[[Shutter Layer 2}}]]", preventing Allie's cards from being affected by her own card effects (Allie's "Guppy" 1200 → 600, Allie's "Tetra" 900 → 300). Riley activates another "Shutter Layer 1", once again targeting "Guppy" and Summoning itself as a copy of the targeted monster (600/600). By the effect of "Aquarium Set", it gains 600 ATK (Riley's "Guppy" 600 → 1200). Riley's "Guppy" attacks and destroys Allie's "Tetra", with "Aquarium Lighting" doubling the former's ATK during the Damage Step (Riley's "Guppy" 1200 → 2400; Allie: 4000 → 1900 LP).

Allie [[Tributes]] "Guppy" to [[Tribute Summon]] "{{TooltipA|[[Aquaactress Arowana (anime)}}|Aquaactress Arowana]]"(2000/2000). Because the monster it was targeting left the field, "Layer 1" is destroyed. "Arowana" attacks directly, but Riley activates his [[face-down]] "{{TooltipA|[[Instant Shutter}}]]", Special Summoning it as a [[Normal Monster]] with the same name, Type, Attribute, Level, ATK, and DEF as "Arowana" (2000/2000), but it will be destroyed at the end of the Battle Phase. By the effect of "Aquarium Set", it gains 600 ATK (Riley's "Arowana" 2000 → 2600). Allie activates her face-down "{{TooltipA|[[Aqua Story - Urashima (anime)}}|Aqua Story - Urashima]]", [[banish]]ing two "Aquaactress" monsters from her Graveyard to make the ATK of one of her opponent's monsters 100 and prevent its ATK from being changed by other card effects this turn. She banishes "Guppy" and "Tetra" and targets Riley's "Arowana" (2600 → 100). "Arowana" attacks and destroys "Arowana" (Riley: 2300 → 400 LP).

Riley Normal Summons "{{TooltipA|[[C/C Critical Eye}}]]"(1400/1000). He then activates the Continuous Spell Card "{{TooltipA|[[Montage Fusion}}]]", allowing him to [[Fusion Summon]] a [[Fusion Monster]] in his [[Extra Deck]] as long as both him and his opponent control the required [[Fusion Material Monster]]s. Since Allie controls a WATER monster, he uses his "C/C Critical Eye" to Fusion Summon "{{TooltipA|[[C/C/C Water Sword of Battle}}]]"(2400/0). "Water Sword" attacks and destroys "Arowana", with its effect increasing its ATK by the ATK of all other WATER monsters on the field ("Water Sword" 2400 → 4400; Allie: 1900 → 0 LP).