Yu - Gi - Oh ! Duelist - Duel 178 " The Eve of Battle " , also known as " Night Before the Deathmatch ! ! " in the Japanese version , is the 178th chapter of the " Yu - Gi - Oh ! Duelist " manga in the English version and the 237th chapter of " Yu - Gi - Oh ! " in the Japanese version . Summary . Dark Marik , missing an eye and fused with " The Sun Dragon Ra " states that this is " Ra ' s " special power . He tells Marik and Dark Bakura to behold as he becomes one with God . " Ra " roars and then blasts a massive surge of fire at Marik and Dark Bakura , burning Marik ' s image away . Dark Marik yells at his other self to begone , calling him a piece of himself that ' s no longer useful . As Marik burns , he asks Ishizu to save him . Ishizu ' s eyes snap open , and she sits up in bed , thinking her brother ' s name . The door opens , revealing Anzu standing there , her eyes blank . Marik ' s image appears , begging her to save Rishid . At 12 : 30 P . M . , Kaiba sits at his computer , tapping on the keyboard . He muses that " Ra " has the power to transfer a player ' s Life Points into ATK , and attack all the opposing monsters and the opposing player in the same instant . He thinks to himself that " Ra " is an invincible God card that decides the Duel in just one turn , and wonders if there ' s any way to stand up to God . Mokuba comes over , surprised that his brother is still up , and tells him that he should go to bed , as tomorrow is the finals . Kaiba reassures his brother that he ' s fine , and gently tells him to go to bed . Mokuba knows that Kaiba ' s using the duel simulation software , trying to prepare for the opponent ' s strategy . He wonders if " The Sun Dragon Ra " is really that strong . Mokuba tells his brother that the ship is on schedule . They ' re supposed to get there at seven in the morning . He muses on the former base of KaibaCorp ' s weapons development , all ruins except for the Duel Tower that Kaiba built . Their stepfather , Gozaburo Kaiba , spent a fortune uilding that island . It was full of high - tech military equipment . He describes it as the center of darkness . After he died , Kaiba destroyed KaibaCorp the defense contractor and created KaibaCorp the game company , using the same technology for game development . He comments that the Duel Tower is like a symbol . Kaiba vows to win the finals on Alcatraz Island , and when he earns the title of Duel King , he will be unconquered in the world . Only when that happens will Kaiba be finally free of his curse . Dark Marik , now wearing the Millennium Ring , walks down the hallway , unsheathing the dagger from the Millennium Rod . He enters Rishid ' s room , but Rishid is gone . Furiously , Dark Marik wonders who could have taken him . As the blimp rockets through the sky , Yugi sleeps in bed , his hand on the Millennium Puzzle . He winces in his sleep and the Puzzle glows . Yugi finds himself inside his mind , emerging from the white door representing his soul room , and looking at the door set with the Eye of Wdjat , now crisscrossed with angry veins . He has a bad feeling , knowing that something is wrong in his other self ' s room . He opens the door , reflecting that it ' s his first time going into his other self ' s room . He emerges into the maze of staircases and doors , looking around in wonder , and asking himself if this is a dream . He thinks that the maze is complicated , endless , and wonders why . Then , Dark Yugi ' s voice sounds out from behind Yugi , asking him what ' s wrong and if he sleepwalked into his room . Yugi freaks , protesting that Dark Yugi scared him . Dark Yugi laughs in apology , though he tells Yugi that this isn ' t a dream . Yugi states that he felt something strange from Dark Yugi ' s room . Dark Yugi agrees ; he ' s been feeling it too . He asks if Yugi is surprised that the room of his soul is a maze . Yugi admits that he isn ' t , he kind of understands . Dark Yugi doesn ' t have memories , so this room is like a map of his soul that isn ' t sure which path to take . Dark Yugi seems surprised as Yugi vows to himself that one day he ' ll get Dark Yugi ' s memory back ; that ' s part of his job . Dark Yugi looks around , admitting that someone else came here some time ago - Shadi . Dark Yugi explains that he came there looking for the " true room of his soul , " but Dark Yugi himself doesn ' t know which door leads there . Yugi wonders what is in the room , what Shadi is looking for . He asks if it has something to do with Dark Yugi ' s memories . Dark Yugi replies that he doesn ' t know , but if even " he " doesn ' t know where the room is , finding it is not going to be easy . Higher up , Dark Bakura - or rather , the fragment of his soul he implanted in a piece of the Puzzle through use of Parasite Mind - thinks that that ' s an understatement . He still can ' t find the door . Dark Yugi tells his partner to go back to bed . Yugi agrees ; tomorrow is the finals . He tells Yugi that he ' ll be fine , and that he ' s going to win to open his own door . Yugi agrees . On the Duel Arena at the top of the blimp , Kaiba satnds laughing to himself . If his hunch is right , there ' is " a way to overcome " Ra . " The stage of their last battle , Alcatraz Island , he remarks . He will become the Duel King and conquer the future . Featured cards . The following cards appeared in this chapter . Cards in italics debuted here . Production History . This chapter was first printed in Japanese in the " Weekly Shōnen Jump " magazine . It was reprinted in volume 20 of " Yu - Gi - Oh ! Duelist " .