Katsuya Jonouchi and Ryota Kajiki ' s Duel ( manga ) Katsuya Jonouchi and Ryota Kajiki faced each other in a game of " Duel Monsters " , during the Battle City tournament . Events . Prior . While the Battle City preliminaries typically took place in the Domino City streets , Ryota went into the Domino City Aquarium , having a keen interest in fish and never been to an aquarium before . While searching for an opponent , Jonouchi used the Duelist search sensor in his Duel Disk to find other active Duel Disks within 50 meters . This led him and his companions , Anzu Mazaki and Sugoroku Mutou , to Ryota at the aquarium . Jonouchi approached Ryota at the killer whale pool and challenged him to a Duel . The audience who were there to see a killer whale show were confused as to what was going on and some assumed that the two Duelists must be an opening act . Jonouchi was happy to have an audience to show off to . As they each had four Puzzle Cards , Ryota suggested that they bet two each , so that the winner would qualify for the finals . Jonouchi agreed and proposed that also bet two rare cards each . Jonouchi wagered " Jinzo " and " Insect Queen " , while Ryota wagered " Leviathan " and " Fortress Whale " . Ryota had heard a rumor that Jonouchi got far in Duelist Kingdom by pure luck and hoped to find out how good he really was . Duel . 1st turn : Jonouchi Jonouchi Set " Chasm of Spikes " and Summoned " Swordsman of Landstar " in Defense Mode . He planed on using " Chasm of Spikes " on any monster Ryota tried attacking with and then Sacrificing " Swordsman of Landstar " for " Giltia the D . Knight " next turn . 2nd turn : Ryota Cautious of Jonouchi ' s face - down card , Ryota decided not to rush things and played " Flying Fish " in Defense Mode and Set " Torrential Tribute " . 3rd turn : Jonouchi Jonouchi drew " Parasite Paracide " , having forgot to take it out of his Deck , following his Duel with Insector Haga . Without looking at the card he drew , Jonouchi Sacrificed " Swordsman of Landstar " for " Giltia " . He then noticed " Parasite Paracide " which had Summoned itself onto his side of the field and infected " Giltia " . Ryota remarked that he did not know Jonouchi liked such gross cards . As the audience laughed , Anzu and Sugoroku were embarrassed by Jonouchi ' s mistake . Finally Ryota activated " Torrential Tribute " , destroying both " Giltia " and the parasite . Ryota angrily said that Jonouchi was like the of Duelists , being so " puny " , he hardly noticed him , and that the Duel was not fun . 4th turn : Ryota Jonouchi predicted Ryota would perform a Sacrifice Summon , but was not worried as he had " Chasm of Spikes " . Suspecting , Jonouchi ' s face - down card was nothing to fear , Ryota he attack ed directly with " Flying Fish " . Jonouchi attempted to use " Chasm of Spikes " . However Ryota ' s " flying " monster was incapable of falling into a pit , so it successfully continued its attack , hitting Jonouchi ( Jonouchi : 4000 → 3200 Life Points ) . Ryota Set a card and ended his turn . Ryota admitted that he was disappointed in Jonouchi , as he disliked goofy Duelists , who do not take the game seriously . He said that whenever he battles , he gives it his all out of respect to his opponent . He compared Dueling to fishing , where he will always reel fish in as hard as he can , regardless of how small they are or one day a big one will pull him into the sea . Ryota explained that he had entered the tournament , hoping to get prize money for a boat and even if it was to take a while , he believed that the sea was waiting for him for the day they will battle . Jonouchi replied that he understood , as there was somebody that he also wanted to battle , and announced that he was now going to fight with full strength . 5th turn : Jonouchi Jonouchi drew " Fairy Box " . He Summoned " Alligator Sword " and Set " Fairy Box " and " Skull Dice " . Ryota was pleased , as he could now feel Jonouchi ' s fighting spirit . 6th turn : Ryota Ryota Sacrificed " Flying Fish " to Summon " Amphibian Beast " . " Amphibian Beast " attacked " Alligator Sword " , but Jonouchi activated " Fairy Box " , hiding " Alligator Sword " in a whack - a - mole box . Ryota then activated " Umi " , flooding the field . Looking at which hole the air bubbles came out of , Ryota was able to determine where " Alligator Sword " was hiding and attack . Jonouchi activated " Skull Dice " , dividing the ATK of " Amphibian Beast " by the number rolled , four ( " Amphibian Beast " : 2400 → 800 ATK ) . Now having the higher ATK , " Alligator Sword " proceeded to destroy " Amphibian Beast " in battle ( Ryota : 4000 → 3100 Life Points ) . Jonouchi commented that the Duel was just beginning . Ryota agreed , but thought to himself that Jonouchi did not know the true terror of the sea . Fighting on his own turf , he felt he had Jonouchi in his net and would now show him his " Sea Stealth II " strategy . 7th turn : Jonouchi Jonouchi drew " Polymerization " , thinking it was just what he needed . Anzu was puzzled as to why Jonouchi was not attacking and Sugoroku explained that due to " Umi " , monsters such as Warrior and Knight - Type could not attack , as they could not swim . With that accounting for most of Jonouchi ' s monsters , Anzu asked how he could win . Sugoroku said that there was one way and wondered if Jonouchi could figure it out . Jonouchi activated " Polymerization " , fusing " Alligator Sword " with " Baby Dragon " , creating " Alligator Sword Dragon " . Capable of flying , it was able to easily cross the sea cast by " Umi " and attack Ryota directly ( Ryota : 3100 → 1400 Life Points ) . Jonouchi celebrated , while stating that the sea is not that tough . Ryota mentally insisted that Jonouchi not underestimate the sea , as he remembered a time , he was with his father on a particularly dangerous fishing expedition . 8th turn : Ryota Ryota Set " Tornado Wall " and another card , both of which went under the water , outside of Jonouchi ' s view . 9th turn : Jonouchi Jonouchi wondered if Ryota had hidden a monster in the water , like he did in his " Sea Stealth " strategy against Dark Yugi , in Duelist Kingdom . He decided not to worry , since his monster could fly . He believed it would be safe if it did not go too close to the water . He declared another direct attack with " Alligator Sword Dragon " , but Ryota activated " Tornado Wall " , blocking the attack . Since the water was lifted to create the wall , the level of the remaining water dropped , giving Jonouchi a glimpse of what was previously under it . As he saw nothing , he assumed that Ryota had not hidden a monster after all . 10th turn : Ryota Ryota hid another card under the water . 11th turn : Jonouchi Jonouchi wondered if Ryota had a played a monster that time . He declared another attack to find out . As the water moved for " Tornado Wall " , he saw no water again this time . However " Legendary Fisherman " countered the attack , destroying " Alligator Sword Dragon " ( Jonouchi : 3200 → 2850 Life Points ) . Jonouchi saw his monster being destroyed , but did not see the monster responsible . Jonouchi Summoned " Little Winguard " in Defense Mode and ended his turn . 12th turn : Ryota " Legendary Fisherman " attacked and destroyed " Little Winguard " . During the battle , Jonouchi looked for the attacker , but saw no signs of motion in the water . Ryota declared that this was the terror of the sea and asked if Jonouchi still thought that the sea was not so tough . Ryota played more cards underwater and ended his turn . 13th turn : Jonouchi Jonouchi Set " Magic Arm Shield " and Summoned " Rocket Warrior " in Defense Mode . 14th turn : Ryota Ryota Sacrificed " Megalodon " and another monster to Summon " Fortress Whale " , whose ATK and DEF were increased by " Umi " ( " Fortress Whale " : 2350 → 2550 ATK , 2150 → 2350 DEF ) . As Jonouchi worried about he was to beat such a giant flying monster , Ryota told him to let this be a lesson to never take the sea lightly . Having seen its dangers firsthand , when he lost his father , he could not stand people who make fun of it , he told Jonouchi . " Legendary Fisherman " attacked and destroyed " Rocket Warrior " , without revealing itself again and " Fortress Whale " attacked Jonouchi directly ( Jonouchi : 2850 → 300 Life Points ) . Sugoroku thought that Jonouchi must find Ryota ' s sniper , as another dual attack would result in him losing . Ryota remarked that Jonouchi had the eyes of a dead fish and asked " What happened to the eyes you had when you came walking into my territory and challenged me to a Duel ? " . Jonouchi wondered about Ryota referring to the location as his territory . He remember during Duelist Kingdom , how Ryota lured opponents to the edge of the sea , where he had the advantage . He figured the aquarium was Ryota ' s territory this time and that the monster was hidden in the killer whale pool . 15th turn : Jonouchi Jonouchi drew " Kunai with Chain " . He Set it and " Lightning Blade " and Summoned " Panther Warrior " in Attack Mode . 16th turn : Ryota Ryota Summoned " Sea Snake " in Defense Mode . He announced that he would be performing another stealth attack and then attacking Jonouchi directly with " Fortress Whale " . Jonouchi watched the killer whale emerging from the pool and used " Magic Arm Shield " , targeting the " Legendary Fisherman " , which was hiding on its back . " Legendary Fisherman " then became the attack target for " Fortress Whale " and was subsequently destroyed ( Ryota : 1400 → 900 Life Points ) . Ryota asked about the shrapnel , saying that " Panther Warrior " must have been caught in the blast too , but Jonouchi revealed his " Kunai with Chain " , which he equipped to " Panther Warrior " ( " Panther Warrior " : 2000 → 2500 ATK ) . The other end became tied around the horn on " Fortress Whale " , allowing " Panther Warrior " to swing on top of the whale . Ryota complimented Jonouchi on finding a way to make his monster " fly " , but considered it futile , as " Fortress Whale " was still stronger . " Panther Warrior " stuck its sword into " Fortress Whale " , but Ryota got his monster to spin around , shaking " Panther Warrior " off . " Panther Warrior " managed to survive the fall , but Ryota thought it would not be for long , as it had engaged in battle with a monster with more ATK . Jonouchi pointed out that the sword belonging to " Panther Warrior " was still jammed into the body of " Fortress Whale " and tied to " Kunai with Chain " . He then activated " Lightning Blade " to channel lightning through the blade and increase the ATK of " Panther Warrior " ( " Panther Warrior " : 2500 → 3300 ATK ) . This resulted in " Fortress Whale " being destroyed ( Ryota : 900 → 150 Life Points ) . The electricity continued to travel through the water , also destroying " Sea Snake " . Having been shaken off the whale , " Panther Warrior " escaped electrocution . Ryota activated " Return of the Doomed " , reviving " Legendary Fisherman " , rather than the stronger " Fortress Whale " , due to his emotional attachment to " Legendary Fisherman " . With " Umi " still in play , Jonouchi was unable to see what monster he brought back . 17th turn : Jonouchi Jonouchi drew " Giant Trunade " . With the chain no longer attached to " Fortress Whale " , Ryota pointed out that " Panther Warrior " could not swing across the sea , but Jonouchi declared an attack regardless . Jonouchi then activated " Giant Trunade " , returning all Spell and Trap Card s to their respective owner ' s hand s , including " Umi " , " Kunai with Chain " and " Lightning Blade " ( " Legendary Fisherman : 2050 → 1850 ATK , " Panther Warrior " : 3300 → 2000 ATK ) . Jonouchi was surprised to see that Ryota had brought back " Legendary Fisherman " , rather than the stronger " Fortress Whale " . " Panther Warrior " continued its attack , destroying " Legendary Fisherman " ( Ryota : 150 → 0 Life Points ) , winning the Duel for Jonouchi . Aftermath . Jonouchi questioned why Ryota revived " Legendary Fisherman " , when " Fortress Whale " would have been a better option . He was too proud to accept Ryota saying all that matters is that he won and demanded a rematch , if Ryota had deliberately thrown the Duel . Ryota thought that Jonouchi was " a real fool with a true Duelist ' s eyes " and told him that " Legendary Fisherman " was his trump card , the soul of his Deck . He explained that the card looked like his father , so he decided to always use that card to reel in the catch at the end of a Duel , like how he and his father used to fight storms together . He believed his father to still be alive , so he could not bare having it in his Graveyard , even at the cost of a Duel . Ryota wept a little , but then laughed that it was silly of him . Jonouchi disagreed with him calling it silly and commented that Duelists each have something special in their hearts that they fight for and had he been in Ryota ' s situation , he would have done the same thing . Per the Battle City ante rule , Ryota believed he was to give Jonouchi " Legendary Fisherman " , as it was his most important card , despite not being rare . Jonouchi could not accept taking something of such sentimental value . However during the Duel , Ryota had realized that if his father were present , he would tell him he was relying too much on a card that looks like him and should really believe what is in his own heart . Ryota declared that even without the card , his father would always fight by his side . That convinced Jonouchi to accept , so Ryota gave him two Puzzle Cards , " Fortress Whale " and " Legendary Fisherman " , instead of " Leviathan " , which he had originally wagered . Cards used . The following cards were shown in this Duel :