"It's really good to have you back Zuzu, but we still have to put an end to the professor's ambitions once and for all" Yuya said after their hug ended.
"I see... I'll give an hand too" Yuzu said with a smile.
"Together we can do it for sure! Nice to meet you Zuzu by the way Zuzu, I'm Lulu!" Lulu said offering her hand.
"And I'm Rin, my pleasure" Rin added while doing the same gesture.
"Lulu and Rin... Shay's sister and Yugo's best friend, I'm so happy that you are safe too." Zuzu grabbed both of their hands.
"We managed to destroy the parasites that were controlling them just like with you" Celina explained.
"Celina had the fantastic idea to make Shay and Yugo try to reach for the real them by remembering their past" Yuya praised.
Celina blushed a little from the embarassment.
"They have quite the dynamic together I must say" Though Zuzu observing them.
"But no more chit chat now, we have a mission!" Celina said with a determined look.
"Yeah, let's go!" Said Yuya as they started to run toward the main hall.
"I know where to find the professor, follow me!" Celina lead their group through the enemy base.
And some minutes later they came across a big door, that led to the throne room.
They kicked the door open and quickly got inside, Declan and Riley were already there too, just to witness the Professor trasforming the Doctor in a card.
"I have no use for you anymore, trying to reach perfection only lead to destruction." Leo said as he dropped the card before taking his seat in the throne.
"I see we have more guests, and they managed to free all 4 girls... but I can't give up, not because I have a clear objective in mind" Leo still hasn't give up.
"You won't be able to touch the girls even with a finger" Yuya said advancing and siding Declan.
"Don't worry about us now, Yuya, we are safe, keep your focus" Celina reminded standing just behind him.
"Before we put an end to this I'm just curious why you would commit a genocide with your students and why do you want to fuse our dimensions" Declan said asking for an explanation.
After a moment of reflexion Leo stood up.
"Fine, I'll tell you, but you probably won't like it" Leo said with a serious look and began narrating his tale.
"There was a time when all 4 dimensions were united, it was a peaceful world in the beginning, and the main attraction was obviously dueling and thanks to the Arc-System, my invection that made the monsters real it became even more popular. All kind of tournament were hosted, and there was a person in particular who distinguished himself for his skills. His name was Z-Arc, and he was undoubutely the strongest duelist I've ever seen, his duels were also entertaining and he had fun while being part of them, but then people started to ask for more action, and this lead to violence, Z-Arc began to hurt his opponents during duels to wow the crowd, until there were no more opponents that could stand up to him, it was in that moment that he used his 4 Dragons to bring destruction to the world.
I remember that day very clearly, people were killed building and all kind of placed got totally erased from existence. I managed to save myself for simple luck, and I started working on a solution feeling responsible, and after some time I managed to create 4 special cards that incarnated the elements of nature, them being be Z-Arc's only weakness. Then I rushed to fight that monster but my daughter Rei stole the cards to go fight him herself, and in the end she managed to effectively defeating Z-Arc, but that came with a cost. Not only the world got then divided into the 4 dimensions that we all know, Standard, Fusion, Synchro and XYZ, but both her spirit and Z-Arc's got also split up into 4 people, one of each dimension, you can probably elaborate the rest on your own, son"
Leo concluded his tale.
"What the hell is this story?" Declan was uncertain.
"The truth, only the truth son" Leo said matter of factly.
"This didn't answer to the question why you then commited all those crimes and want to reunite the dimensions again" Declan said.
"Getting the dimension back together is my only way to get my daughter Rei back, and to do that I needed a lot of energy for my new invention, the Arc-Reactor, that you can see here in the background, I obtained what I wanted by carding people, but that isn't enough, I also need the 4 parts of my daughter, which you can probably guess now, are the 4 girls we have present here." He said looking in the eyes of Celina, Zuzu, Lulu and Rin.
Useless to say everyone was in shock.
"What...?" Lulu said.
"Impossible..." Rin added.
"This can't be..." Zuzu whispered.
"We are the four part of this girl named Rei?" Celina yelled shocked.
"Exactly, and by making you all be absorbed by my reaction I'll be finally able to hug my daughter again" Leo said ending his explanation.
"So you were only using me to get your daughter back..." Celina said while her face was obscured while looking down.
Yuya then hugged her tight.
"He may have viewed you as only an object to get Rei back, but you have real friends now Celina, and all 4 of you are special in their own way and deserve to live all the same" Yuya tightened his embrace even more.
She hugged him back with tears streaming down her face.
"I'll make him pay for this, just stay safe here" Yuya ended the hug and went back to face Leo beside Declan.
"Thank you, Yuya, I really needed that after knowing that my existence is only a fragment of someone else..." Celina thought getting back beside the other 3 girls.
"And I know they feel the same" She thought looking at Zuzu, Lulu and Rin.
"Here's the great Yuya uh? Or better should I say Z-Arc?" Leo said with a knowing look.
"What?" Yuya and everyone else said at the same time.
"This shouldn't surprise you, as I said both my daughter and Z-Arc got split up in 4 parts, and one is here before my eyes" Leo said with an angry look.
"Yuya can't be Z-Arc right? Wait... that ominous darkness I felt when he saved me in the Syncho Dimension... I can't believe it..." Celina thought astounded as Yuya, Declan and Leo prepared themeself for the final rumble.