Mukuro's POV:
I'm in a separate, slightly dark space, but I can see everything that's happening in the area of a city block around my brother's house. Right now I can't interact with the physical world, but in a few hours I'll be back in the world.
'Just wait a little bit, brother, I'll see you soon.' I can only get excited about the idea of seeing my brother in a few hours. I've been in this separate space for a while, so I couldn't interact with my brother, but I know it's important for me to stay here since this place serves as a way to fully awaken my power.
After a few hours, I'm finally back in the world.
I find myself on the basement floor of my brother's house.
"I'm back, brother..." is the first thing I think, before remembering something.
"...I'M GOING TO KILL THAT BITCH" The white-haired girl in the basement had the audacity to insult my brother.
'UNACCEPTABLE, THAT BITCH HAD THE NERVE TO INSULT MY BROTHER, UNFORGIVABLE, I'LL KILL HER'
I quickly run through the basement towards the room where she is, quickly open the door, and see that whore who cursed my brother. I don't give her time to look up, I quickly go up to her.
"..." She was going to raise her head and say something, but there's no time because I land a kick in her face, throwing her against the wall. Without giving her time to react, I start kicking her, but I control myself not to kill her quickly.
"YOU BITCH, WHY DON'T YOU UNDERSTAND MY BROTHER'S KINDNESS?" I scream at her while kicking her face and stomach, I see the blood start to drip but I don't care.
"HE LEFT YOU ALIVE AND COMES TO SEE YOU EVERY DAY, BUT YOU, LIKE AN UNGRATEFUL DOG, ONLY KNOW HOW TO BEG AND CURSE HIM" I pull out a miniature version of Abaddon, my Demon King, my Demon King has the form of a large black spear, but in the small version it resembles a piercing dagger.
I start cutting her, being careful not to make deep cuts to make her suffer as much as I can, the blood that flows stains her body.
"YOU DAMNED BITCH, DIE, DIE, DIE, DIE, DIE, DIE, YOU WHO DON'T UNDERSTAND HOW INCREDIBLE MY BELOVED BROTHER IS SHOULD DISAPPEAR FROM THIS WORLD" I feel my Demon King cutting her flesh, I feel incredible for finally putting this bitch in her place. Even though she's also a spirit, I don't care, to me she's no different from humans, her body now covered in cuts makes a pool of blood on the floor, but it's still not enough to calm my anger.
I continue to cut her frantically while being as careful as possible not to kill her, the body is quite durable as long as no vital organs are lost or a large amount of blood, so I know that if I'm careful I can make her suffer for a long time.
I see how her white hair slowly turns red as the blood flows, her body that has a white tone creates a strange harmony with the flowing blood.
She only screams in pain and can't even say anything because I don't give her time, I don't even hear what she's trying to say, I just don't care, I just feel that I have to torture her as much as I can, this ungrateful bitch has to learn that you don't mess with my brother.
'My brother came every morning...does he like her? Is that why he left her naked? He kept her alive because he wants something from her? Why does he care about this bitch?' I feel my hatred increase.
'No...my brother is only mine, I won't let anyone have him' I feel a boiling of emotions, my love for my brother only makes me hate this girl even more.
"...You...YOU BITCH" it's almost as if she was trying to seduce my brother with this body.
I give a strong kick to her stomach, making her spit blood, and start stepping on her as if I'm stepping on a disgusting insect.
"YOU BITCH, I BET YOU WANTED TO SEDUCE MY BROTHER, HE'S MINE, ONLY MINE AND NO ONE ELSE'S, YOU DAMNED PROSTITUTE" I start kicking her repeatedly, her body full of bruises and cuts causes the blood to spread, staining the floor and the surrounding walls.
'MINE, HE'S ONLY MINE, I WON'T LET THIS BITCH STEAL HIM FROM ME' I grab her arm and throw her to the ground, her position is face down while her limbs are like a broken doll.
'ABADDON' I increase the size of my Demon King, although with Michael I needed to say the name to use his abilities and summon him, with my Demon King I only need to think and I can already use my powers.
I move my Demon King from bottom to top to cut this wretch's arm off, she lets out a desperate scream as she feels her arm being corroded, my Demon King can destroy everything it touches, but I can also keep it as a poison that spreads gradually, so in a few hours she will die and her body will turn to dust.
'I ended up spending too much time on this...she'll die anyway, I'll make an amazing breakfast for my brother' I decide to go to the kitchen and make something for my brother to eat when he arrives.
Although I could have finished her off at once, I decide to leave it to chance, in case my brother takes a while to arrive, this girl's body will be corroded and turn to dust, but if my brother arrives in time, I know he can heal her.
'I hope you die, you damned bitch' I wish she dies before my brother arrives, since she is a spirit, I believe that if I'm lucky, maybe my brother will arrive in time and save her.
I grab the white-haired girl's head and hit it hard against the wall with enough force to only knock her unconscious. After she loses consciousness, I run to the kitchen and start preparing breakfast.
"My brother doesn't like anything in particular...I'll prepare a simple breakfast..." I start doing everything and after about 34 minutes I hear the door open, so I look at who's arrived.
"...Mukuro?" I hear my brother's beautiful voice.
'BROTHER' I quickly notice my brother and run to hug him.
"Brother Aurelio, Brother Aurelio, Brother Aurelio, I'm so happy to see you" I hug him tightly.
'Finally, it's been a while since I could only see but not touch my brother.'
"Mukuro...what's wrong with your eyes?" my beloved brother asks with doubt.
'My...eyes? Is there something wrong with them? I'll have to look in a mirror later...'
"...I'm not sure, Brother" I answer uncertainly. My brother starts thinking about something while I keep hugging him.
Sniff Sniff.
'My brother's scent is so wonderful, I could stay here forever, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother, I love you brother,' I keep smelling his scent, until I notice another scent.
'...WHO'S THE BITCH THAT RUBBED HERSELF ON MY BROTHER?' I smell another woman's scent, I have a crazy desire to tear her apart right now, but I keep calm, I don't want my brother to think I'm an unbalanced person who can't control herself.
I continue to smell my brother, I don't know who this girl is, but if I find her, I'll kill her, I'll make this prostitute regret touching my brother, I'll tear out her eyes for looking at my brother with lustful eyes, I'll tear off her hands for touching him, I'll burn her skin for rubbing herself on him, I'll tear out her guts while she's still alive, I'll have her corroded alive while I laugh at her suffering.
Although my hatred for this girl I don't know is immense, I'll leave that to think about later, I have to keep smelling my brother's scent as much as I can before he stops the hug, I also rub myself on my brother to cover up the scent of that bitch who touched him, I want to cover my brother with my scent.
"Mukuro..." I hear my brother speak, I look at him and see his gentle smile.
'Ahh, my brother is so handsome, I wish he could take my virginity soon...' I can hardly wait for the day when my brother makes me his.
"...The breakfast will burn if you don't take care of it..." what he says cuts off my train of thought, reminding me that I was cooking for my brother, I give him a quick kiss and go to the kitchen.
Although some things got burned, I had already made most of it, so I throw away that last dish and take what was already done to the table.
"Mukuro, can I take a picture of you?" I hear my brother calling me, the idea of taking a picture excites me since we didn't have any, I run to hug my brother and take a picture together.
"Of course, Brother, we don't have any pictures together, so this is perfect."
After the picture, I go back to the kitchen and finish setting the table.
"Brother, here's breakfast, I made it with a lot of love, I'm sure you'll love it." Although I had already thought about putting aphrodisiacs in the meal to make my brother take my virginity, I ended up not doing it because I think it wouldn't work since he's also a spirit, unless it was a very strong aphrodisiac, but I don't know where I could get something like that.
"It's delicious, sis...sis, I've decided to enroll you in the same school I'm in, I've kept you at home so you could get used to it, but it's time for you to start socializing," he starts praising me, I instantly feel happy, but he continues talking while I pay attention.
'I'll be able to study with my brother...' I think about the implications, on one hand it's bad because I'll have to meet humans, but...I'll be able to prevent those horny bitches from approaching my brother. Just the idea of this excites me, plus I'll be able to spend even more time with my brother, which is perfect.
Since we don't have parents anymore, I can finally have a relationship with my brother, but what makes it difficult is that he spends a lot of time out of the house, although he takes care of me and gives me a lot of love, he still worries about maintaining an image for the humans, which reduces our time together.
I respond to my brother.
"Of course, Brother, I'll do whatever you want." I know he understands the implications of this, but he's never advanced our relationship, which I find sad, but there's not much I can do for now.
"Mukuro...you don't mind if I kill innocent people?" he asks me with doubt, but I notice he has more curiosity than doubt about my answer.
"No." Although my answer is a bit cold, I can't respond any other way.
"These disgusting humans deserve to die, I don't care at all what happens to these bastards." I hate them, they treated me worse than any animal, I was locked up at home, starved, and beaten every day.
When I went to school, everyone humiliated me, beat me, cursed me, and made up horrible rumors, no human ever tried to help me, no matter how much I begged, no one cared, how can I like the humans who did this to me?
In the end, the only one who saved me was you, my brother, you were the only one who understood me and took me out of that hell.
I feel the hatred for humans overflow, but as quickly as it came, it disappears after my brother kisses my forehead.
"Hehehe" I can't help but giggle excitedly, my brother is so kind, I don't care that my brother is evil to others, my brother is the only one that matters and whatever he wants to do, he'll do it, and I'll make sure that happens.
"Sis...could you tell me what your Demon King does?" my brother's doubt is logical, after all, I awakened my Demon King recently.
"Of course."
"My Demon King is Abaddon, The Demon King of Ruin and Destruction. He has abilities with the opposite meaning to Michael, Michael has the meaning of Seal=Protect and Open=Free, while Abaddon has the meanings of Destruction=Destroy and Imprison=Contain." I explain with a happy smile, like a child who got a new toy, although this explanation is not very good, I know my intelligent brother will figure out to a certain extent what it does.
"Basically, my Demon King is now a large Spear capable of destroying everything it pierces, while also having the ability to imprison things," I say this so he knows the form of my Demon King.
"Incredible, sis," he praises me, I feel an explosion of happiness at being praised.
"Sis, since I don't have class today, what do you think of a walk?" he says something that fills me with excitement.
'A date?' Even though he didn't say it's a date, I've already accepted this as a date.
"A date, yes, yes, let's go, I'll get ready." I quickly run to my room, even though I don't have a room in this house, since my brother just bought it, I can still just imprison the space of a room, so now this house has my room.
I start changing, although I can do this with my Astral attire, I still want to do it manually as a way to make the date perfect.
'Which dress would my brother like the most? A sexy one? A cute one? A more casual one? Maybe something fashionable?' I look at a large amount of dresses. I opt to choose something more casual, because I know my brother usually chooses casual or simple clothes.
The outfit I chose is a white blouse with lace ruffles on the sleeves, while I'm wearing a black skirt that's not long but not short, reaching a little above the knees.
'What underwear should I wear? Will my brother finally make me his? So maybe I should wear black lingerie? Or white panties and bra to symbolize purity?' I decide to go with white, even if my brother doesn't do anything, I don't want to rush and ruin something so wonderful.
'Purse...'
I spent about 10 minutes choosing a bag and shoes, in the end I chose a small black bag to match the skirt and also chose black flats so the clothing pieces would match.
"What kind of hair accessory would my brother like..." I have very long hair, so to prevent it from dragging on the ground, I have to do a pretty hairstyle that also solves this problem, although I've already thought about cutting my hair, I ended up giving up on this idea because my brother said he likes my hair.
I decide to tie my hair in an Odango-style hairstyle with ribbons around two buns, thus solving the length problem, I also put a crescent moon-shaped accessory in my hair, finishing my preparation.
'I hope I didn't take too long...I did it as fast as I could' I'm afraid I made my brother waste time, but I have to be in the most beautiful way possible to impress my brother. I decide not to use makeup because my brother says it ends up ruining my natural beauty.
'I'm ready, I hope my brother likes it' I leave the room and go to where my brother is, hoping he likes how I look.