Yu - Gi - Oh ! - Duel 020 " Game Over " is the twentieth chapter of the " Yu - Gi - Oh ! " manga . This chapter was originally printed in the Weekly Shōnen Jump magazine in Japanese . Its first English release was in the Shonen Jump magazine . It has been reprinted in volume 3 of the and volume 2 of the bunkoban . Summary . On the side of the building , up near the roof , Jonouchi holds the board Anzu is standing on , as her supporting rope stands to break . Shadi is astonished , by the power of trusting your friends that Dark Yugi has just told him about . This causes his heart ' s ushebti to shatter , allowing the Millennium Key , it was holding up , to slide down to Anzu ' s hand . The key hits Anzu ' s hand and she returns to normal . Wondering where she is , she gets a huge freight after looking down . She drops to her knees and Jonouchi struggles to hold - up the board . Saying that she ' s too heavy for him to hold up , Jonouchi tells her to get back onto the building . Anzu ' s asks what he is doing there . Jonouchi , now at breaking point , says that that is what he ' d like to know . Anzu can ' t move , as she ' s too scared that she ' s going to fall . Jonouchi has other problems as the zombie professor climbs up towards him . He yells at Anzu to hurry . Anzu turns around and starts to make her way back to the building . The professor grabs Jonouchi by the leg , causing him to lose his grip of the board . Anzu slips , but Yugi grabs her by the hand and helps her onto the building . Relieved that Anzu is okay , Jonouchi focuses on what to do with the professor . Yugi calls Jonouchi and instructs him to make the professor touch the Ankh - shaped key . Jonouchi notices that Yugi is acting different , but proceeds to follow his instructions . He grabs he professor ' s hand and presses it onto the Millennium Key . Like Anzu , the professor is returned to normal . He is unsure what is going on , but recognizes Jonouchi . He gets a major shock after looking down and realizing that he is missing a number of his teeth . Grandpa arrives on the roof , as Jonouchi and the professor climb over the roof fence . Shadi faces Yugi and accepts his defeat . While he had used a number of illusions to test Yugi , to Shadi it has seemed that the image of friends trusting and helping each other was an illusion . Yugi has also realized something about the power of the Millennium Puzzle ; no matter how far apart they are , friends will always come together as one . They are the pieces that bind together to become undefeatable power , just like a puzzle . The power of unity is the power of the puzzle , Yugi says , which surprises Shadi . Yugi and his friends all face Shadi . Jonouchi addresses Shadi as the " dude in the dress " . He does not know how Shadi got to this place , but threatens him to not come back anymore . Shadi agrees and turns to leave . Before going , he tells Yugi that he has passed all of his tests . Although he is beaten , he is pleased . His bloodline has been searching for a long time , for someone like Yugi . Yugi may be the one able to open that door he says and walks away . Shadi leaves and Jonouchi asks what " that jerk " was talking about . Anzu gets Jonouchi ' s attention and asks him if Yugi seems different . Jonouchi agrees and Anzu wonders what this means . They approach Yugi about this , but find that he is back to his normal self . Yugi asks what ' s wrong , but they both blush and say nothing ' s wrong . Anzu and Jonouchi look at each other and wonder if they are crazy . Yoshimori thanks everyone for coming and apologizes for not being able to offer them anything . He cannot remember what happened and hurts all over . Jonouchi blames Anzu for breaking his teeth , but she retorts that she only broke three . The gang celebrate as Grandpa offers to take them all out to eat . As Shadi leaves the university , the board he had Anzu standing on and its supporting ropes disappear . The Millennium Key , which was attached to the setup falls and Shadi catches it below , saying " Goodbye , Yugi . . . We ' ll meet again ! " .