Yusei is riding his D-Wheel alone on a highway at night. He is aware that this speed is still not enough. He reminds himself of the Dark Glass who told him to go beyond his limit. He realizes that, in order to challenge a new limit, a new engine is truly needed.
Later at a restaurant at the security building, Yusei, Jack, and Crow are invited to have a dinner with Ushio and Mikage. Crow is enjoying eating while Yusei and Jack are sitting still and staring at Ushio and Mikage. Crow feels thankful for the meal. He doesn't know what's going on, enjoys eating alone, and suggests Yusei and Jack start eating. Jack goes straight to the point that it's doubtful. Mikage and Ushio cough at the same time as if Jack has been able to catch something quickly. Mikage asks what Atlus-Sama means.

Yusei tells them what Marsa always says. There is no simply value thing. People should appreciate those who give harsh words but should watch out those who give sweet words. Jack totally agrees with Yusei. There is no way the securities like Mikage and Ushio would treat them extravagantly without a back side. Ushio wonders what Jack is talking about. Jack asks whether they truly don't have anything on their back side. Ushio is afraid to say that there is something. The fact is that he has a favor to ask them.
As Jack has expected, they do have something to ask in exchange of this extravagant food. Mikage quickly explains that it isn't a big deal. Recently, there has been an amnesia man in their custody. They would like Jack, Crow, and Yusei to take care of this man for a while. Yusei asks why they have to do this job. Mikage explains that all facilities in Neo Domino City are now busy with crashing of sightseers and D-Wheelers. Thus, it should be good if Yusei and friends can help them this job for a while.
Jack tells them straight that their home garage isn't a hotel. Crow still eating notes that they don't have any room to take care of anyone. Ushio begs Yusei to accept it, but Yusei denies firmly. Mikage pleads Atlus-Sama to do it, but Jack also denies. Ushio bows and hopes that Crow will have a better answer, but Crow also denies. Ushio can't stand anymore and changes his attitude shortly. He asks whether people still want to reject his request after having high-class steak.

Crow is the only one holding silverware and can't argue Ushio's claim. He changes the topic by asking where the troublesome (amnesia) man is. Ushio is afraid that this man should have come for while and hasn't appeared yet. Mikage also looks disappointed. Crow smiles as the deal seems to be closed easier. It can't be helped if the troublesome man doesn't come. That means the deal should be over. Mikage and Ushio look at each other and know that they can't do anything.
After the dinner, Jack, Crow, and Yusei are walking in the parking lot. Crow says that it's very close. Mikage and Ushio almost succeeded to push a stranger to them. Jack blames Crow who ate very quick and made things more complicate. Crow gives an excuse that people never knew whether they would have a chance to go to this kind of restaurant again. That's why he took this chance to enjoy eating.
While people are walking to their parking D-Wheels, a mysterious man is getting impressed by Jack's Wheel of Fortune. He calls it to be a good boy as he is going to wipe some dirt. Once it's done, he says that it is beautiful now. Jack, Yusei, and Crow quickly run into the man. Jack asks aggressively what the man is doing to his D-Wheel. The man turns to Jack and looks stunned. His hand is still holding a sheet used to clean Jack's D-Wheel.

Jack understands that the man is a remnant of the thief group. He approaches into the man, gives him a punch, and knocks him out. Angry Jack tells the man not to get close to his D-Wheel again. This punch is payment for the man's current interference. Jack gets on his Wheel of Fortune and leaves quickly. Yusei tries to call him, but Jack gets away.
Jack rides very fast, passing Ushio and Mikage getting on their car on the other side. Seeing Jack rushing himself, Ushio wonders what's going on with him. Yusei is looking at the man knocked out by Jack and telling him to hang on. Crow suggests Yusei leave him, but Yusei can't do that. The man was severely punched, and his face is very red. Ushio and Mikage run into people, asking what's going on.
Crow explains that it isn't Jack's fault. It's because the mysterious man was trying to steal Jack's D-Wheel of Fortune. Crow points to the suspect, and Ushio and Mikage become very surprised. Mikage calls him [Bruno] and asks angrily what he is doing here. Bruno quickly bows and apologizes. Because the D-Wheel was very cool, he couldn't help touching it.

Listening to their conversation, Yusei and Crow realize that Bruno is the amnesia man whom Mikage and Ushio would like them to take care of in the earlier discussion. Crow is afraid that this is bad because the man in the request has finally appeared. Crow asks Yusei what they should do. Yusei is afraid that he has no answer although Crow asked him though.
Jack then rides back and quickly takes Bruno from everyone. He says that he is going to borrow this guy for a night. Crow looks at Yusei and doesn't understand what's going on. Yusei has no explanation and tells Crow to hurry to follow Jack. He gets on his D-Wheel and prepares to take off. Ushio calls Yusei, and Yusei tells him to leave the rest on them. He and Crow then take off together. Mikage and Ushio just look at one another and get confused. It's as if people have already accepted their request to take care of Bruno for a while.

Jack takes Bruno back to their home, the Poppo Time garage. Bruno is thrown to the floor. He looks scared and asks Jack to stop harming him. Jack looks very aggressive, and Crow can't stand asking what happened to him suddenly. Jack asks Bruno what he did to his Wheel of Fortune. Yusei asks Jack what he means by that. Jack explains that the power of his Wheel of Fortune has increased. Yusei is very stunned by hearing it.
Bruno explains that he just adjusted the data of the D-Wheel's computer a little bit. Crow hardly believes it. Yusei has been spending a lot of time to increase the power of their D-Wheels, but Bruno could do it in just a moment. That's what Jack could think of, so he would like to know what Bruno did. Yusei looks happy to hear it and changes his attitude shortly. He asks Bruno nicely whether he could tell them how he did it.

Bruno shows people the data of Wheel of Fortune and his analysis. He modifies timing of booster, and explains that it should slightly increase power. Yusei is amazed as he has never been aware of this method. Crow and Jack have no idea at all what they are talking about. Jack thinks that they shouldn't lower their guard. There is no guarantee that Bruno can be his friend.
Bruno says that this method can also be applied to Yusei's and Crow's D-Wheels. If he modifies the program, the power of their D-Wheels should be enhanced. Crow gets excited and wonders whether it can truly be done. Jack asks whether Crow has listened to his earlier words. Bruno turns to talk to Crow that he can do it, and Crow looks very happy. Jack looks tired as Crow didn't seem to listen to his warning at all.
Yusei changes the topic, asking about Bruno's identity. Bruno introduces his name to him. Without having people telling their names, he knows Yusei, Crow, and Jack well. Yusei knows Bruno's skills well now, and would like him to look at something that doesn't seem to work well. He opens the picture of a gear. Seeing the picture, Bruno recognizes immediately that it is the Mormetn Engine which uses a Planetary Particle.
Bruno asks whether it can create any wave. Yusei is afraid that it hasn't worked yet. Bruno thinks that they just have to make a program to control it, which is preferable way. The Mormetn engines of a D-Wheel have some difference in output by strength of composition; however, their basic structure is similar. Therefore, by a control program, speed can definitely be changed.
While Yusei is listening to Bruno's view carefully, Jack is complaining. He reminds Yusei that it is the design of their new engine, which is supposed to be a top secret. He isn't satisfied by that Yusei reveals it to a stranger like Bruno. Yusei asks whether Jack can shut his mouth up because they are having serious discussion. Jack becomes very stunned and doubts whether Yusei means that time of talking to him isn't worth.

Yusei doesn't care what Jack is talking and still pays attention to what Bruno is talking. Bruno points Yusei to look on screen and suggests that a method can be done to stabilize power. Jack realizes that Yusei completely ignores him. Crow walks into Jack and tells him to leave this job on Yusei. He understands that Yusei and Bruno are now talking about something very serious and important. Jack doesn't like that Crow is also on Bruno's side. He decides to let people do what they want and walks away with bad mood.
Yusei and Bruno are still discussing. Yusei argues that if a method is done, they will lose power. Bruno understands Yusei's point and suggests another method. Both listen to each other view and continue working together. Crow decides to leave them and lays himself on a sofa on an upper floor. He notices Yusei acting like a fish gaining water. Crow then yarns and falls asleep on the sofa.
Yusei and Bruno work together for the whole night until the next morning. The finally come up with a concept of the program. Bruno is very convinced by that it should work. Yusei thinks that it should be fine when they test it. He thanks Bruno because his opinion is very helpful. Bruno gives a compliment that it is because Yusei has solid basic plan in his mind and deserves to be Dr.Fudo's son.
Bruno gets to up to have a break with a cup of noodle. Yusei asks whether Bruno knows his father. Bruno tells him that Dr.Fudo's Mormetn is the foundation of all D-Wheel's engines. Everyone who loves D-Wheels always knows him. Bruno understands that Yusei's name is taken from [Planetary Gear] (Yusei = Planetary). Yusei thinks that it's just something similar, but Bruno thinks that it is a cool thing. While talking, Bruno is peeling a cellophane off the cup of noodle and dropping it into a nearby trash bin. He pours hot water into it and starts eating.

Both continue talking about the Planetary Gear, looking at its picture on screen. Bruno comments that the Planetary Gear has an interesting structure. One gears doesn't do anything. Many gears are connected to the center of the solar gear. Bruno doubts what the solar (central) gear linking them together is if they are one of the gears. Yusei smiles as an answer is clear to him. It's the duel monsters that make riding duel possible. On the top of that, there is a bond among him, Crow, and Jack.
Bruno enjoying eating noodle is impressed by such a completely wonderful structure of their relationship. Yusei changes a topic. He has heard from Mikage that Bruno has lost his memory. Bruno tells Yusei that when he was aware, he found himself washed up on the beach. He then finishes eating noodle and leaves an empty cup on the table.
Yusei wonders whether Bruno had an accident. Bruno is afraid that he couldn't remember anything at all. Anyway, when he works with D-Wheels or duels, he feels as if he can remember something. Yusei understands his situation and asks whether Bruno would like to stay here with them for a while if he doesn't mind. Bruno looks happy and asks whether it is fine.
Yusei tells Bruno that a new engine is necessary for the WRGP. Thus, he would like Bruno to help as much as he can. Bruno looks happy and smiles. If he is good for Yusei, he would like to become a gear that can grant their dream. Yusei thanks him, so does Bruno. Both shake their hands as a promise of cooperation.

Later, Bruno and Yusei are working together while Jack and Crow are looking bored and watching over them on a sofa. Lua and Luca run into the room to pay a visit. Lua asks Yusei to play with them, and Luca tells him that she has just figured out a new combo. Aki also appears and asks Yusei for help on Physics' problems. Crow tells them to be quiet, and Yusei doesn't seem to notice their friends coming at all.
Lua asks Crow who the man working with Yusei is. Jack explains that this man is a refuge entrusted to them by the Public Security Maintenance Bureau. Crow adds that Yusei now promoted this man to be a super machanic. Lua gets excited to hear such a big title. He wonders whether this super machanic man can help him improve his duel board. Crow answers by boring sound that it may be possible. He is afraid that the amount of Bruno's and Yusei's discussion has already gone beyond his talk with Yusei. Lua comments that they are like the ducks getting together. Luca corrects him that those words are used for a man and a woman. Lua laughs as he has just got it wrong.

Note: Lua calls them "おしどり夫婦" or "Oshidori Fuufu" which means loving couple or happily married couple who are always together. "Oshidori" refers to Mandarin ducks staying as a couple. |
Aki doesn't seem happy, and Lua asks what's wrong with her. She turns back and says by cold sound that she is leaving. It seems to her that she is a bother here. Lua smiles and doubts whether Aki is just jealous. Aki turns to him and asks him to stop his kid habit of adult talk. She then walks downstairs without saying anything else. Lua notices that Big Sister Aki is truly angry.
Luca asks Crow and Jack whether it's fine to let it be like this. Jack turns his face, looks annoyed, and asks how he can know an answer. Crow is afraid that he doesn't know an answer, either. It's a windfall if Yusei and Bruno can find whatever can make them get close to completion of a new engine.
Yusei and Bruno work together very hard in front of their computers to develop a program for a new engine. Bruno feels very good about it and keeps moving on. Both finally finish creating a control program. Bruno gets excited to their success of this incredible program. He suggests them to have a sleep after working long hours. Yusei agrees and plans to install the program into a machine tomorrow. They both leave the room and turn off the light. In that night, while they are sleeping, there is a shadow of a mysterious man sneaking into the room. His target is at their computers.
