O5-5 raised his hands in a deescalating way and tried to calm me down.
O5-5: "I have a lot to tell you, would you mind coming with us?"
I looked at him sharply and tried to assess him.
He was probably a traitor, I must assume that he wanted to trick me to gain my trust, that wouldn't be untypical for traitors.
Y/N: "How do I know that you are not trying to deceive me? You are a traitor so it wouldn't surprise me at all."
He smiled.
O5-5: "No, I don't have such intentions, if I wanted to kill you, I wouldn't have come here to save you.
What?
Save me?
He hadn't saved me, he was possibly saving the lives of his soldiers.
I laughed.
Y/N: "You can't fool me! Are you finished?"
They were silent and looked at me.
O5-5: "Please Y/N..."
I interrupted him with a condescendingly sadistic voice.
Y/N: "Pah... Just as I thought..."
Within a second green-blue flashes appeared, hovering a few centimetres above my palms.
The soldiers trembled at the sight of me and some fled.
Y/N: "Don't think that you can get away from me that easily!"
O5-5: "Y/N! If you kill us now, you will never be able to see SCP-953 again."
SCP-953?
Who would that be?
I tilted my head and smiled at him.
Y/N: "You still believe you can escape your fate with words?"
There was something familiar about that number...
How did I know it?
I faltered and my energy orbs disappeared.
Another part of the devouring darkness in my head finally left.

Y/N: "953... How do I know this? I've never seen him or her before..."
O5-5: "No! You have had much contact with her, please spare us and follow me. I know about the darkness in your head and that you can't remember the near past."
I looked at him.
How did he know that?
Y/N: "How do you know that?"
O5-5: "I'll explain everything to you. Will you come with me?"
There had to be something to it.
Even though I still don't trust him, there's something I don't know, but he knows.
I lowered my hands and sighed.
Y/N: "You win, I'll come with you."
They wanted to exhale in relief that they finally escaped there death.
Y/N: "But if I detect even one hostile act against me, I will turn you and the whole Chaos Insurgency into what you see there!"
I pointed to the sea of cell tissue and blood behind me.
O5-5: "Yes, that was a warning."

A few minutes later.

I was led through the Chaos Insurgency facility and found myself in a kind of conference room some moments later.
The room looked similar to how I would imagine the conference room of the O5 Council, I unfortunately didn't have the honor to be invited by them yet, but however, I imagine the room of the O5's similar to this one.
We sat down at the table.
O5-5: "Are you thirsty?"
He pointed to a water dispenser with a big gallon of water attached onto it's top that was leaned on one of the eight pillars that supported the room.
Y/N: "No, I'm not thirsty."
He nodded.
O5-5: "All right then, let's get right into it."
Y/N: "Yes."
He sighed and began to talk.
O5-5: "As you probably already know, I am O5-5. I betrayed the O5 Council and the Foundation because O5-1 became more and more inhuman. I just didn't like it there anymore, if you have something like a moral, you are definitely wrong in that organization ... Anyway, they told you that we don't have enough MTF units to make a reasonable attack on the Chaos Insurgency."
I nodded.
Y/N: "This was a disaster."
He also nodded.
O5-5: "That was a lie, we had more than enough soldiers to crush the Chaos Insurgency, your unit was sent on a suicide mission under the code name "Mission E11-Z".
I looked at him in disbelief.
Y/N: "This can't be..."
O5-5: "It's true, this was personally ordered O5-1."
Y/N: "Why? Why the fuck would he have to do this?"
Why would he want to sacrifice us?"
O5-5: "This is a more difficult question, your past... You can't remember your past because Amnestics were applied on you."
Amnestics? The secret medical that allows the foundation to erase memories.
It makes sense now...
O5-5: "You were actually a researcher at the Foundation before all this, but you received special abilities through an encounter with SCP-049. I don't want to go into too much detail, but you were already Captain of Epsilon-11 and research director of SCP-953." 
It all looked familiar now, how could it look familiar?
Y/N: "Why did the Foundation wanted to sacrifice me then? Wouldn't it be smarter for them to have good relations with me?"
He nodded.
O5-5: "You had contact with 953 despite it was forbidden for you and threatened the O5 Council, whereupon O5-1 ordered you to be abducted at night. Finally he ordered to erase your memories trough the usage of amnestics. This attack had been planned for a long time already. Eventually your unit was sent on this mission with you to inflict maximum damage."
Incredible, it all makes sense...
Did the foundation really turn against me?
O5-5 took a file and pulled a picture out of his folder which he gave me.
O5-5: "This is SCP-953."
The picture showed a girl with a slightly Korean look, black hair, yellowish eyes, fox ears, and nine dark brown tails surrounded by a slight green shimmer.
She was really cute and somehow she looked familiar to me...
O5-5 kept silent to give me time to digest all this information.
Suddenly it was as if the veil was lifted from my head, I remembered all the events little by little.
I remembered everything, really everything.
The O5 Council betrayed me, the Foundation betrayed me.
But everything was exactly as O5-5 had told me.
Y/N: "Those bastards ..."
I was overwhelmed with the situation and looked up.
Suddenly my memories of SCP-953 came back.
Y/N: "We gotta get 953 out of there......now!"
O5-5: "Yeah, but there's a little problem right now."
Y/N: "A problem?"
O5-5: "Yes, the mission wasn't just to sacrifice you. Four more MTF squads were supposed to arrive an hour after your attack to destroy us once and for all."
I looked him in his eyes.
Y/N: "This is bad..."
O5-5: "We still have enough soldiers here but..."
Y/N: "You want to team up with me."
He nodded.
Y/N: "Alright, I agree if you help me to get 953 out of the bastards' custody."
They deserve to suffer...
I smiled and already knew what incredible torture I would let O5-1 experience.
O5-5: "All right then, do we have a deal ?"
I looked at him silently and slowly began to nod.
Y/N: "Yes, we have a deal."
O5-5: "Very good. We need you with our soldiers as soon as possible. The Foundation can attack at any time."
Y/N: "All right."
We stood up and shook hands to seal the alliance.
O5-5: "Good luck out there."
I laughed.
Y/N: "As if I need that!"