Yu - Gi - Oh ! Duelist - Duel 040 " The Last Piece " , known as " The Final Area " in the Japanese version , in the fortieth chapter of " Yu - Gi - Oh ! Duelist " and ninety - ninth chapter of " Yu - Gi - Oh ! " . Summary . Dark Yugi and his friends exit the Labyrinth , having just defeated the Meikyû Brothers . As they leave they notice both doors led to the same place anyway . Jonouchi pounds on one of the doors calling the brothers liars . Honda says they cannot relax just yet ; they do not yet know if the tunnel will take them above ground or to somewhere like Pegasus ' dungeon . Yugi takes out the video recorder that Grandpa is trapped in . He tells Grandpa that he is on his way to Pegasus Castle and will soon have his soul freed from the video . Grandpa insists that Yugi does not worry about him and says that to be a true champion , one cannot be afraid of losing , only then can true strength be born . As they continue down the tunnel , Bakura wonders if any other Duelists have reached the castle yet . Anzu notes that there is Kaiba , who is not really in the tournament , but was heading towards the castle and wonders if they let him in . Honda shouts out after spotting an exit with light coming from it and the group all rush out . Meanwhile at Pegasus Castle , two of Pegasus ' henchmen dash to the guest room , where another is waiting outside . The one already present reports that Croquet is still being held hostage inside . Inside the room , Kaiba is sitting on a chair , holding a gun in his right hand . On the floor in front of him is Croquet with his head inside a duralumin briefcase . Kaiba has one foot on top of the case , ready to snap Croquet ' s neck . One of the henchmen , Saruwatari , enters the room , demanding that Kaiba let Croquet go . Kaiba points the gun at Saruwatari and demands that he bring him Pegasus for that to happen . If they keep him waiting any longer , he threatens to snap Croquet ' s neck . Saruwatari asks one of the other henchmen , if he has informed Pegasus yet . He replies that he has , but Pegasus said to wait until the time was right . Inside the room , Kaiba announces that he knows they have taken Mokuba prisoner and asks if they are going to continue to deny it with their lives at stake . Terrified , Croquet stutters that he does not know . Kaiba informs Croquet that he has already taken his cards from the case and if Croquet continues with this deception , it should be easy to clean his blood from the case . Croquet thinks to himself , before Industrial Illusions can take over KaibaCorp , they need the key that Mokuba swallowed . They do not have the key yet , but if he tells Kaiba about Mokuba , the entire plan will be ruined . Croquet reflects back on how he got into this situation . The previous night , Kaiba had come to the castle . Croquet refused to allow him to meet Pegasus , because he did not have ten Star Chips , but told him there was a room for him in the annex . Furious over this , Kaiba struck with Croquet with his briefcase . Saruwatari ran over , pulling his gun out , but was too late , as Kaiba has already taken hold of Croquet and pointed a gun to his head . Kaiba remembered Saruwatari from when he worked for KaibaCorp . Kaiba reminds him how KaibaCorp ' s special employee training him how to hold a weapon . He asks if he ever finished the course and presses the gun against Croquet ' s head , threatening to teach him how to fire a gun now . Croquet screams at Saruwarati to put down his gun , he can tell Kaiba is serious by looking at his eyes . Saruwatari sweats and drops the gun . Kaiba orders Saruwatari to take his case to the guest room . He will keep Croquet hostage until he sees Pegasus . Inside his office , Pegasus receives word that Yugi has just earned ten Star Chips and is on his way to the castle . Delighted with this news , Pegasus thinks to himself that he knew Yugi could do it , but he is not quite ready to end this enjoyable game . Pegasus hits a button on his computer to contact the other guest he had waiting . Inside the guest room , Pegasus appears on a screen and greets Kaiba . He utters his disappointment in Kaiba ' s manners . Kaiba demands that Pegasus hand Mokuba back . Pegasus replies " sure . . . but under one condition . " Kaiba snarls and asks what it is . Taking the two ends of his tie , Pegasus tells Kaiba that he should know . Kaiba and this other person , whom Pegasus only refers to as " he " , are like the two ends of the tie ; tied together , they pull against each other sharing the same fate , bound together , each one straining against the other . Tying the two ends together , he tells Kaiba that the time has come for the two Duelists to intersect . The only way for Kaiba to get Mokuba back is to defeat Yugi in a Duel . Pegasus hits a button on his computer , changing the screen in the guest room to show surveillance of Mokuba ' s cell . Inside the cell , Mokuba wishes Kaiba could come , but believes that he is most likely still in a coma , back at Kaiba Manor . He vows to protect the company , by not letting Pegasus get the key from him . He takes a pendant from his jumper and remembers back during Death - T how Dark Yugi said that Kaiba would return when he solved the puzzle of his heart . Because of this , he used the picture of him and Kaiba , while living in the orphanage to make the pendant . He kept the half with Kaiba ' s picture , which he now regards as his only treasure . He gave Kaiba the other half , believing it to be the final piece of the puzzle of his heart . Distressed at seeing Mokuba in his state in the cell , Kaiba clutches his half of the pendant and releases Croquet . Pegasus orders Saruwatari to give Kaiba the things they were talking about . Saruwatari tosses the five Star Chips , that Mokuba stole earlier , in front of Kaiba . Pegasus instructs Kaiba to wager those against Yugi . If he wins he may enter the castle where Mokuba is . Kaiba glares back and reminds Pegasus that the " tie of fate " is wrapped around his neck . Dark Yugi and company are just after arriving on the surface and see Pegasus ' castle , not so far away . Dark Yugi notices a silhouette of a person standing at the top of the stairway . On closer inspection , he realizes it is Kaiba .