Yu - Gi - Oh ! - Duel 016 " Shadi ' s Challenge " is the sixteenth 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 . Shadi watches as Yugi and his friends try to stop Professor Yoshimori from choking Jonouchi . Yoshimori ' s strength is too much for the gang , making them unable to move his arms . Yugi starts to wonder if Shadi brainwashed him . Thinking to himself , Shadi says that he has redecorated Yoshimori ' s soul room , making him his puppet and giving him one motive ; to make Yugi ' s friends suffer . This should be enough to push Yugi ' s heart to the limit and when Yugi is out of options , his other self should awake . He had planned to leave the country after punishing Kanekura and Yoshimori , but after his encounter with the other Yugi , he has the feeling of defeat smoldering in his heart and cannot leave the country with those embers still burning . Jonouchi starts to lose consciousness . Panicked , Anzu looks around the room for something to help . She grabs a globe and asks the professor to forgive her before walloping him in the face with it , knocking out three of his teeth . Yoshimori loses his grip as he falls back . Jonouchi gasps and begins to recover his breath . Yugi checks on him , while Anzu and Sugoroku are worried about the professor . Yoshimori stands up and dashes towards them , still possessed . Jonouchi gets everyone to split up . Shadi watches the ordeal and realizes possessing the professor will not be enough ; he will need to enter the soul of another person here and turn them into a puppet too . He holds up the Millennium Key behind Anzu and uses it to enter her soul room . Inside Anzu ' s soul room , Shadi finds the walls are like mirrors , making it like a dance studio . Since mirrors reflect one ' s own image , Shadi interprets this as a symbol of confidence or pride , so Anzu has beliefs . He says she also has dreams as he spots a picture of , with a dance shoe in one arm and a fast food drink in another . He spots a picture of a man with no face , but says it means nothing to him . He thinks Anzu is easy to like , but the redecoration must proceed since he wants to push Yugi to his limit . However he will not turn her into a pitiful puppet like Yoshimori , but will make her a pretty doll with no voice or memories . He then performs his " Marionette Design " . Professor Yoshimori makes a run for Jonouchi , but Sugoroku stands between them and asks the professor what is going on and tries to remind him that they are friends . The professor punches Sugoroku away , knocking him into a bookshelf and causing him to fall unconscious . Jonouchi starts to worry that it is only a matter of time before the zombie professor gets Yugi and Anzu too . He starts making gestures at the professor to divert his attention . Once the professor focuses on Jonouchi , he runs out the room , drawing the professor away from the others . Yugi calls after Jonouchi , but Shadi calls Yugi back . He tells Yugi that he has a good friend , as Jonouchi is willing to sacrifice himself to save them . Yugi turns and sees Shadi with Anzu , who is standing motionless next to him . Shadi says that she is a good friend as well . Yugi asks what he did to her . Shadi explains that he redecorated her soul room . She is now unable to think or speak and cannot move without Shadi ' s will . He encourages Yugi to let himself be overcome by anger and sorrow and call the other Yugi forth . Meanwhile , Jonouchi is still running from the professor , who has no trouble keeping up . Jonouchi smirks that that is not a problem as he is not trying to get away . He has drawn the professor far away from Yugi and the others and is now ready to fight back . After rushing past the next corner , Jonouchi turns and punches the professor in the face , as he comes around . The professor is thrown back and loses some more teeth . Jonouchi goes over to check on him , thinking the hit should have turned him back to normal . However the professor gets up , still zombie - like and chases after Jonouchi , who cannot understand why that did not work . Back in the lab , Shadi lists the negative feelings Yugi is experiencing and says that the other Yugi is standing on the other side of his emotions , like a runner waiting for the handoff in a relay . He asks Yugi to listen as his next words will be the trigger ; " If I ordered this girl to die . . . she would die ! " . With that the Millennium Puzzle activates and Shadi stares in anticipation as Dark Yugi emerges , taking control of Yugi ' s body . He shouts out Shadi ' s name . In return , Shadi greets the " Yugi within Yugi " for the first time in this world and informs him that the second stage of their game can now begin . Appearances . Debuts are in bold . Anime adaption . Episode 6 of the Toei " Yu - Gi - Oh ! " anime , is based on Duels 15 to 20 of the manga . The differences it contained from this chapter were :