Disclaimer: I don't own the Xenosaga Anime or Video Game: RPG, mostly based off the Namco/Bandai video games Xenosaga Episode I, Xenosaga Episode II: Jensits Von Gut Und Bose and Xenosaga Episode III: Also sprach Zarathustra.

Note: I just beat the Xenosaga Video Games and it made me sad (Sad about a lot of things actually Rest in Peace Jin Uzuki and Kos-Mos) that it never mentioned if MOMO and Jr hooked up or not which is my favorite pairing of all time. So I decided to use my knowledge of Xenosaga and ability to write and Make a short Fan Fiction about it. Blades and Knives are welcome ^_^

Prelude:

Development

Ten Years passed since Shion, Allen, Jr., and The Elsa Crew left in search for Lost Jerusalem, The task Chaos entrusted them with. They were lead to believe that their close friend Chaos will be there waiting. MOMO spent her time back in the city working with Scentia alongside her Mother Juli Mizrahi. Tons of Advancements were made in the ten years like a new power used to charge E.S.'s and make them all like the E.S. Asher thanks to the Professor. But their greatest achievement was done by none other than Miyuki and MOMO who discovered Kos-Mos' remains from the battle with Gnosis. They spent many of those years rebuilding her as a surprise to Shion, Miyuki's idea. Every night MOMO would stand where she waved goodbye to Jr. waiting just as she promised herself she would. Even though she was busy with Scentia it never toke her mind of Jr.

"There you are MOMO," Miyuki walked up to the sad girl. "We need to get back to work Kos-Mos isn't finished yet. We still got a long way to go." Miyuki toke MOMO's hand.

"Okay," MOMO looked over at Miyuki then looked back hoping to see the Elsa. She let out a sigh following Miyuki to the Maintenance room where Kos-Mos was held. Rebuilding Kos-Mos wasn't apart of Scentia's work but MOMO felt it was best to help Miyuki than let Miyuki do it all by herself knowing she'd screw it up somehow. For MOMO work always helped her get over her worry for Jr. and the others so it was a win-win.

"Based on the data the Professor got from Shion the last time Kos-Mos was destroyed it makes it kind of hard to rebuild Vector's Princess but thanks to you MOMO it's possible." Miyuki looking at the model MOMO had came up with for new improved Kos-Mos. "When Shion and Chief Ridgeley see this they'll flip. Can't wait to start her up." Miyuki went to push the reboot button.

"Wait," MOMO toke the device from her. "She's still a long ways from being done if you reboot her now we'll all be in trouble." MOMO began rewiring Kos-Mos attaching limbs that match that of the model. "We've only got the blueprints for the Kos-Mos design we haven't even begun the remodeling her to fit the model. She's still the exact same way we found her."

"This process takes forever, I want to start her up now." Miyuki began handing MOMO pieces while looking at the model. "So MOMO what are you Jr. planning on doing when he gets back huh?"

"Me and Jr.," She blushed. "Ugh what do you mean?" She began ravaging threw parts avoiding eye contact with Miyuki.

"Yeah I have been noticing some chemistry between you two." Miyuki smiled making MOMO really uncomfortable.

"I, ugh, don't know what you mean Jr. and I don't have that kind of relationship." MOMO's face turned redder. "It's more like brother and sister."

"You like him don't you?" Miyuki voice sounded very playful and dirty. " The way your always waiting for him to come back it's written all over your face."

"No, it's not." MOMO covered her face hiding herself from Miyuki.

"I hit the nail on the head didn't I?" Miyuki handed her a piece to Kos- Mos. MOMO toke the piece attaching it to Kos-Mos. The door to the maintenance room opened and Juli walked in.

"MOMO there you are," Juli walked up to her looking at new model for Kos-Mos. "These are Scentia developments, MOMO did you take files from Scentia to design this Model of Kos-Mos?"

"Sorry mommy but I wanted to make Shion happy by making a new and improved Kos-Mos. Jin said that she deserved to be as happy as she wanted to be and I wanted to help make Shion happy." MOMO voice sounded cute and child like it reminded Juli of Sakura. It made her remember that MOMO didn't age a bit from the day Jr. and Shion left.

"How long has it been since they left?" Juli crossed her arms.

"Ten years, 3 months, and 12 days." MOMO answered sweetly.

"Dang she even got the months and days." Miyuki backed up.

"I see it's been that long well just out of sheer curiosity MOMO do you intend to completely rebuild Kos-Mos even without Kevin Winnicot's designs?" Juli looked at the blue prints.

"Well actually we don't have to we found her remains while we were testing out the E.S.'s aboard the Dammerung." Miyuki smiled. "I guess you can say we got lucky."

"To our surprise parts of Kos-Mos worked so she's reboot able all she really needed was maintenance but we figured it would be more of a surprise if we updated her!" MOMO smiled.

"So this is why you have been sneaking out lately well I have no objection to you rebuilding her just be prepared to deal with Scentia when she's finished. I doubt they'll be much trouble considering she helped save universe countless times." Juli patted MOMO on the head. "It's late you should get some rest."

"Yes mommy, Miyuki we will stop for now and start back up tomorrow night." MOMO followed her mother. MOMO noticed Miyuki trying to reboot Kos-Mos. "Don't touch anything until then."

"Aw man." Miyuki frowned and followed them out.