In the picture are Black and you the reader, of course the hair and height differs, this is just how my OC looks like. Your dress will also be a different colour if you want.

The One Concern is hosting a party! All important people are invited, so me, an agent, will be there too. I'm so excited! I'll see my long time crush and friend in a dress for the first time.  She's probably super cute in it. Anyway I'm getting ready right now. I've decided on a long dress with sleeves that are on my upper arms, that way exposing my shoulder and neck area. It also has a lot of sparkly small stones stitched on the waist. It's a nice shade of (f/c) and goes with a choker which has a gem attached to it in the same colour. I do my hair and put on my make up. And before I know it it's already time to go. I've even heard Mother will be here. I've never seen her in person, only her statues and on posters. Either way, I'm walking down the last corridor and am now standing before the big doors of the party room. Music and the sounds of people having fun is emiting from them. I use my ticket and the doors automatically open. I walk in and the first thing I notice is the big dance floor filled with all kinds of people. As I look closer I can even see Agent Grey dancing with some women close to him. He's always been such a big flirt. I take a big turn and walk to the drinks and snacks laid out on a big table. I take a drink in my one hand and a small cupcake in my other. I notice Tolo standing not to far of the table and approach him. "How are we doing Tolo? Do you like this Larry so far?" "Oh Agent (f/c, that isn't white, black or grey) Hello. It's been nice so far, I'm impressed General Chrome actually planned all of this for us." I take a bite out of my pastrie. "Should I go dance? Do you think that'll be a good idea? Everyone's having fun there and I'm just standing here waiting for nothing." I finish my cupcake, "No worries, just go there bring out your dance moves! I know you secretly practised every free minute." "Hehe not really but thanks. I'll go now. Have a nice evening" "Oh before you go, have you seen Agent Black or perhaps White around?" "Well I know Agent Black's on the balcony because of her headache. And White no clue. Maybe not here yet." "OK thank you, goodbye" Tolo walks to the dance floor and disappears in the crowd. I make my way over to the balcony. A figure stands there at the railings, holding her head with one hand seemingly on pain. That's her. I walk to the spot of the railing next to her. "Hey, how are you feeling. Is the headache worse?" she turns herself towards me, letting her arm fall down her side. "Oh it's you, well I'm at a party with loud music and everyone screaming around. So no I'm super fine and feeling top fit." she says sarcasticly. O roll my eyes, internally adoring her sarcastic side. I take the chance and look at her dress, a simple black short dress. As I predicted it's super adorable on her. "I see you've gotten a drink like me. Is it good? I haven't tasted mine yet." "As good as a drink handed here for free can be." "Hahaha, that's true. They'd never give is something high quality without making us pay." We both, clearly not having any other topic to talk about, turn out gazes to the sky. Looking at stars in our comfortable silence. Soon the it's being broken by Black. "So this is a little random, but why have you chosen to go into the machine? Why have you taken this huge risk, just to work for the One Concerne? K wanted to ask this before you forget like I did." she asks not even facing me. "Well, my parents are dead, I'm an only child so no family there anymore, I didn't have friends so going out and doing things would just be a burden. That's why I've decided to do it. The worst that could happen is death and I don't fear death. I'm actually really glad I did this, even tho my arms and legs randomly feel like they're on fire because of the hole ivory thing and my robotic fingers and toes (you can change that of your OC has other robotic parts). Now I have people I'm actually happy to be around, White is nice to be around sometimes, Grey has that Personality that just makes you like him anyway and then there's you. You're funny, cute and strong. I'm... I'm just so happy that I can spend time with such a good friend like you!" that just sounded weird calling her my friend and not girlfriend, but hey gotta keep it real. I look at her and see her surprised face starring at mine. "I... I don't know if I see you as a friend though.... I-I'm sorry." "If you still can't trust me then that's OK, take your time in getting to know me. I don't judge." "No no! That's not what I meant. I... I want to be more then just friends. It hurts calling you my friend. I don't know why, why am I feeling this way?" "Black, could it be that you, perhaps, are in love with me?" "In love... Sounds about right. I. I love you (y/n). If you don't feel the same way-" I quickly hug her not caring that our drinks are now on the ground, shattered into tiny little shards. "Madelyn, I love you too, with all my heart." She looks at me tears starting to appear on her face. She quickly burries her head into my chest and starts sobbing. "F-from where do you know my actual name? I-I haven't been called this way since decades!" I let my one hand stroke her fluffy hair and my other one hold her back, keeping her as close to me as possible. I once saw it I'm some files. Now just let it out, I know how bad it is to keep your emotions in you 24/7." And so she sobbed until there were no tears left.

Bonus:
Grey: "HEY BLACK LET'S DAN- oh is this the wrong time. Am I interrupting a moment here?"
Balck+(y/n): "DAMNIT GREY!"