Yu - Gi - Oh ! Duelist - Duel 027 " The Secret Weapon " , known as " New Weapon Capability ! ! " in the Japanese version , is the twenty - seventh chapter of the " Yu - Gi - Oh ! Duelist " manga in the English version and the eighty - sixth chapter of the " Yu - Gi - Oh ! " manga in the Japanese version . Summary . Jonouchi and Kaiba have just begun their Duel using Duel Disk s . Jonouchi has just Summoned " Armored Lizard " to counter Kaiba ' s " Battle Ox " . Yugi , Anzu , Honda , Bakura and Mai watch the Duel and are impressed by how lifelike the monsters are . Kaiba thinks to himself that the Duel Disks are his secret weapon that will defeat Pegasus . Having seen Pegasus read the minds of his opponents from across the table , Kaiba concluded that the only way to beat him is to stay out of range . Yugi wonders how the spinning disk makes the monster appear . Kaiba explains that the Duel Disk has a V - 2 emulator and can hold as many as five cards . Its hyper 3 - D engine creates Solid Vision using data from the microchips in the cards . Jonouchi does not fully understand the explanation , but comments that it is like fighting instant cup ramen . " Battle Ox " and " Armored Lizard " engage in battle , with " Battle Ox " plunging its axe into the neck of " Armored Lizard " . Although the attack hit , Jonouchi says that the lizard is still alive as the axe was unable to fully cut through the armor scales . Kaiba insists that that does not matter , since " Battle Ox " has more ATK . " Battle Ox " raises its axe , carrying " Armored Lizard " with it and then slams it back on the ground , this time fully penetrating the armor and decapitating the lizard , destroying it and dropping Jonouchi ' s Life Points to 1800 . The " Armored Lizard " card is then ejected from the Duel Disk , leaving Jonouchi chase after it . Yugi shouts at him to pick it up later , while Anzu looks away embarrassed , calling Jonouchi a " cheapo " . Kaiba explains that when a monster loses , its controller is to jerk the wire on their Duel Disk to pull the disk back to them . Jonouchi does so and realizes the Duel Disk is like a yo - yo , which he considers himself to be good at using . Jonouchi begins his next turn and Summons " Flame Swordsman " by placing it in the center stage and throwing the Duel Disk back out . " Flame Swordsman " attacks " Battle Ox " with its " " Tôki Enzan Ken " " attack . Having more ATK , it seems as though " Flame Swordsman " will win , but Yugi then recalls that " Battle Ox " has a strong resistance to Fire , meaning the ATK of " Flame Swordsman " will drop by 300 . With just 1500 ATK , " Flame Swordsman " is destroyed by " Battle Ox " and Jonouchi ' s Life Points drop to 1600 . Anzu urges Jonouchi not to give up and Honda wonders if there is any way Jonouchi can beat Kaiba . Kaiba smirks and says that he presumes Jonouchi is the world ' s worst Duelist . He says that their special Duel is more like an exhibition and tells Jonouchi should not worry as he will not take his Star Chip s , but he will shatter his confidence until nothing remains . On Kaiba ' s turn , he announces that he is playing two cards to power up " Battle Ox " and will show Jonouchi the difference in skill between the two players . He uses " Polymerization " to fuse " Mystic Horseman " with " Battle Ox " . Kaiba says that the two cards are from Greek myths , the and , and combines them to get the " Rabid Horseman " . The increased speed raises its ATK and DEF . Yugi sees that with the Duel Disk , it is easier for Kaiba to make combos and has added Fusion combos to his Deck . Jonouchi Summons " Swamp Battleguard " , However , it is destroyed by the " Rabid Horseman " . Over the next few turns , Jonouchi Summons more monsters , including " Axe Raider " , " Battle Steer " and " Rock Ogre Grotto # 1 " , until he has only 550 Life Points left . Kaiba laughs and suggests that Jonouchi give up . Jonouchi drops to one knee and thinks that he cannot win . His friends encourage him to continue and without thinking , Mai shouts at him , asking is he not ashamed and tells him to stand up and fight ; she does not want to see him like this . She then gasps and puts her hand on her mouth , wondering what she did that for . Jonouchi tells her to shut up and says he does not want to hear from her . Jonouchi continues the Duel and draws " Red - Eyes Black Dragon " , which he Summons . Kaiba is somewhat surprised to see this card . Yugi thinks that even though it uses a Fire attack , " Red - Eyes " its should still be able to win as it is much stronger . Using its " Black Fire Bullet " attack , " Red - Eyes " attacks and destroys " Rabid Horseman " , dropping Kaiba ' s Life Points to 1600 . Jonouchi ' s friends cheer and Kaiba says that he guesses that counts a scratch . Now much more confident , Jonouchi asks Kaiba how he likes that , but Kaiba mocks him for being so happy over winning just one turn . On Kaiba ' s next turn , he said that he had been saving a card that could beat Jonouchi ' s anytime ; a card that Yugi had gotten back for him . He Summons " Blue - Eyes White Dragon " , which uses its " Burst Stream of Destruction " attack to destroy " Red - Eyes " . Jonouchi is knocked over by the blast and his Life Points drop to 0 . His friends rush over to see that he is okay and Kaiba asks Yugi if he sees now that he is the one who is going to beat Pegasus . Featured cards . The following cards appeared in this chapter . Cards in italics debuted here .