After the events with the Absolute Solver, Y/N was starting to get worried for Uzi and N, after Uzi rejected his help and asked what he was. Y/N was sitting in his bedroom, wondering if Uzi is ok, until he heard a young girl's voice.

???: Are you ok, Y/N?

Y/N turned his head to see Unicorn, holding her unicorn plushie U-Chan, standing in the door frame.

Y/N: Yea. I'm fine, Unicorn. It's just... I'm worried bout Uzi and N. After the events at the worker drones colony, I'm just exhausted after the clash against a program known as the "Absolute Solver."

Unicorn: What's the "Absolute Solver?"

Y/N: The Solver, from what I could gather, is some kind of program that, what I can tell from the event, had the goal of Killing worker drones then impersonating them as holograms to lure more victims to it. All for the purpose of rebuilding J's destroyed body.

Unicorn: Whoa. That's awful...

Y/N: I know. But, I'm glad I have my friends and all of you by my side.

That made Unicorn smile and hugged Y/N, who hugged her back. Suddenly, Cleveland enters Y/N's room.

Cleveland: Y/N, there's someone here who's asking if you're here.

Y/N was surprised by this as he along with Unicorn walked into the main room and Y/N couldn't believe who was there....

Y/N: (Shocked) P-Penny?

Penny, upon hearing one of her bestie's voice, turned around and went wide eyed the moment she saw him.

Then a whirring noise was heard and Penny shot towards Y/N.

Penny: BESTIE!!!

Y/N, although flailing his arms to tell Penny to slow down, was tackled to the ground in a bone-crushing hug by Penny. Thankfully, Y/N's eradicator body was able to tank Penny's android strength.

Penny: Bestie! I missed you so much!

Y/N: I missed you too, Penny.

As Penny was sobbing into Y/N's shoulder, Amagi entered the conversation.

Amagi: Y/N, I don't want to ruin this moment, but who is this girl?

Y/N: Oh, right. Everyone, this is Penny Polendina.

Penny: (Salutes) Salutations, everyone!

After a long several minutes of introductions, Y/N and everyone else helped Penny get settled in. As everyone was organizing Penny's new room, Y/N caught his best friend looking at the ground with a sad expression. Y/N was worried for Penny and walked over to her.

Y/N: Penny? Are you ok?

Penny: No... I'm worried about the others.

Y/N: You mean Ruby and the other girls?

Penny: Yes...

Y/N: I'm worried about them too. But I'm sure they're ok, wherever they are.

(Timeskip to the next day)

The next day, Y/N was heading to the colony to check on Uzi, when his scanners detected a hostile rapidly approaching his position. He brought out his sword and stood guard. There was silence... And then there was yelling. Y/N dodged the attackers attack, but when Y/N got a good look at his attacker, he heart shattered by what, or rather who attacked him.

Y/N: Y-Yang...?

Yang Xiao Long, one of Y/N's childhood friend, launched herself at him and attempted to punch the eradicator with her now mutated right arm. Y/N successfully jumped over Yang's attack, only to be ambushed by an unknown attacker.

Y/N gets up and looks at who ambushed him, only to see his other childhood friends, who are also like Yang.

Y/N: Girls... no.

Grimm Blake: You will pay for what you did to the humans on this planet!

Grimm Ruby: Along with helping the rogue AI!

The four girls then launched themselves towards Y/N, Only to be frozen in time by the latter, who used his ability to freeze time.

Grimm Weiss: What the!?

Grimm Yang: (Struggles) I can't move!

Y/N, getting his chance walked up to his friends and fired a blue bean into each of their eyes. The Grimm girls tried to resist, but it was pointless. 

During this process, all of their memories before becoming what they are now returned and eventually, they stopped struggling.

When Y/N was finished, and the beam ceased, the girls slowly opened their silver, sapphire blue, amber and lilac eyes.

Ruby: Ugh...wh-what happened?

Y/N: You have your memories back, that's what happened.

Weiss: (Tearing up) Y-Y/N?

Y/N: Yes, Weiss. It's me.

Y/N then unfroze them and almost instantly, the four girls tackles Y/N into a hug, while balling their eyes out.

Blake: I can't believe it, Your still alive!

Yang: W-We all thought you were d-dead!

The four girls were holding Y/N very close as Y/N proceeded to hold the four of them close as well.

Y/N: It's ok, girls. I'm right here.

After a few minutes, the girls let go of Y/N. Y/N then led them to where his home/base of operations was.

(Timeskip)

After the five made it back to Y/N's home, everyone inside was shocked by Y/N's childhood friends appearances, but Y/N named to calm everyone down by telling them the they are his childhood friends.

Ruby and her team then told everyone that they learned about what really happened on Copper 9, JCJenson tracking them down, slaughtering their entire families without mercy and even performed gruesome and agonizing experiments on them, turning them into what they are to this day. They even erased they're memories of all past events, replaced them with false memories and ordered them to kill Y/N and any allies to him, just to cover their tracks of what really happened on Copper 9.

After hearing this, Everyone was speechless that JCJenson would do something like this. Y/N was furious that JCJenson did this to his childhood friends and wants vengeance more than ever, but calmed down, knowing that diving head first into JCJenson's property would just be a death sentence.

Y/N then sought to reverse what JCJenson did to his friends and brought them to a nearby laboratory. After 2-3 hours, the girls were now back to normal.

Yang had to get a prosthetic arm, because her original right arm was chopped off by JCJenson as a "punishment" for fighting back. However, even though the girls were back to normal, they still retained the memories about the gruesome experiments.

Just thinking about the experiments caused the four girls to cry. Y/N, hurt to see his childhood friends cry, hugging the four of them at the same time. The girls then hugged Y/N back as they sobbed onto his metallic, eradicator body.

After about 5 minutes of sobs, the girls calmed down.

Ruby: Thank you so much, Y/N.

Yang: Yea. (Sniffle) For saving us.

Y/N: You four are more than welcome.

Penny: Ruby?

Ruby went wide eyed after hearing Penny's voice. She turned around and saw Penny intact.

Ruby: Penny...

Ruby kept staring at Penny, so relieved to see her friend alive and well.

In response, Penny crouched down...

Penny: Sal...

Ruby then got confused.

Penny: U...

Ruby then got even more confused. Then...

Penny: TATIOOOOOOOONS!

Just like Y/N, Ruby was tackled to to the ground by Penny in yet another, bone-crushing hug.

Ruby: (Groaning) Ow...

Penny: It is such a pleasure to see you again!

Ruby: (tearfully) Penny, I... I-I thought you...

Y/N: Ruby, it's ok. She's back and that's all that matters.

After more shenanigans, everyone was helping team RWBY get settled in. They're gonna need the rest, tomorrow will be a very busy day.