40 minutes later...

I walk back to the changing room now that sport is over but take my top off, feeling too hot even with the cold weather of this day. I groan but comb my hair back to not let my wet bangs full of sweat blind my view or stick to my skin. "Dude!" someone exclaims behind me as we're all going back to the building. "Kook, your back! What the hell have you done?!" he looks at me with shock as if something was not okay with my back but I frown. "What?"

"Your skin is covered in marks!" he touches it but reminds me of the reason of those things. "Did you have rough sex?" he laughs but forces me to put my cloth back on. "Yeah..." I let out a bit vaguely, not knowing what to say to this. "Really? I didn't expect you to say yes," he stops guffawing like a kid but doesn't go away. "Was it y/n though?"

"That's none of your business," I don't talk about it with him since he's not Mino but ignore his face. "Well...if it wasn't her that means you cheated since she's your girlfriend."

"Bro," I sigh but look into his eyes. "The sex life I have with my girlfriend doesn't regard you so leave me alone."

He smirks but glances away, finally.

•••

4 pm.

"Jungkook!" a girl yells my name as I'm walking up to the gate with my baby but I turn around and check who it is. "Hey...I'm sorry...but..." Hyunae holds the red pen that I gave her some days ago and puts it forth. "You-" I gasp at the sight of it.

"I'm sorry..." she bites her lips but blushes. "Do you know how much this pen cost you brat?!" I point my finger at it but she doesn't say anything. "I paid thirty dollars just to get my name written on it!"

"I didn't know..." she looks glum but keeps the broken pen between in her small fingers. "Go away before I make you eat it," I look daggers at her but she just steps away. "I'm joking dummy," I stop acting mad and relieve her, making her turn around to look at me with her red face. "I paid it one dollar," I tell the truth.

"Tch..." she gives me a rude look as she just realized I fooled her this whole time but I giggle and take y/n's hand to walk away. "This girl..." I shake my head and get my phone out of my pocket.

"You seem close to her..." my baby speaks in a gentle voice as we're heading to Mino's car. I answer the text I received from a friend and peek at her. "Honestly we just speak to each other when we're in a group and when it's about that red pen," I smile but lock my phone and lay all my attention over her. "Hm..." she expresses some jealousy without even realizing but I stroke the back of her hand with my thumb. "I don't care about her baby."

"I know," she replies. "I was just curious," she looks up into my eyes to show me she believes my words. I smile at her but she does it in a shy manner and looks away. "Come on guys, I need to pee!" Mino yells at us now that we're close to him so I chuckle at his face but enter his car, I get on the back seats with y/n and he hurried to join us. He starts the vehicle in no time and we all put our seatbelts on.

"Kook," Mino starts what we planned. "I forgot to ask you earlier but could you go to the supermarket with me? I'll drop you off, y/n, but I just need his big muscles."

"Yeah, I'll come," I nod but feel a bit shameful for doing this. "I can't come with you...?" she doesn't understand right away why I'm not taking her with us but I shake my head and put my hand on her thigh. "No baby, I want you to stay in the warmth. It's too cold today."

"But you're going to be cold-"

"Shh," I cut her off with a smile and press my lips on hers. "Listen to me. Don't contradict daddy," I whisper against her lips but she acquiesces.

I'm planning to leave y/n at my house since my mom is home and just pretend to be going to the supermarket to help Mino today. I hate to lie to her but Mino gave me the location to her stepbrother's house this morning since I asked him right after something happened last night so, I'm about to solve some problems. Even if y/n doesn't want me to. I'm pretty sure she has no idea what I'm about to do.

/ flashback \

10 pm.

My hand never ceasing the touches on her body, I pass my hand under her tank top and slide higher while we're both making out on my bed. The movie still playing in the background when we've been touching and kissing each other for more than ten minutes already, I keep my arm above her head and caress her cheek as my hungry lips aren't leaving her sweet ones. My hand that doesn't want to stop fondling her curves goes lower on her thick thigh, her legs wrapped around my body to make this even better, I stroke the back of her thigh and give some squeezes.

The ringtone of a phone slightly startles her and y/n breaks the kiss. Since this is the sound of her phone, she sits up and grabs it to check who's calling.

"This is Minkyu..." she says in a worried voice. "Put it on speaker," I tell her but keep my hand on her thigh. She does as told and picks up the call. "Hello...?" her trembling voice exudes all the distress that he can cause even through the phone, some anger building inside of me because of this. "Where the fuck are you y/n?!" he yells at her. "I've been texting you and you're not answering for fuck's sake! Are you with that asshole who manipulates you?!"

"Minkyu-"

"You fuckin' hurry to come back to my house right now and gimme the location to his house 'cause I'm gonna fuckin' beat the shit out of this bastard!" he never stops talking to her rudely, the blood in my veins boiling up. "Minkyu...please...I'm not doing anything bad...I told dad and mom about it and they said it was okay-"

"No it's not!" he cuts her off anew. "What have I said about this son of a bitch already? Do you wanna get hurt again?! You lied to me when you said you would come back to my house, it's been three days and you've spent them all in his house! You know he doesn't love you, he just wants to fuck you and use you! So you come back here before I go berserk and do something I might regret-"

I grab the phone with wrath but sit up. I deactivate the speaker and talk to him. "You better shut your mouth and not talk to her that way, alright? And you will not do anything to her you fucking asshole."

"You leave my sister alone you fucking shit and you better not dare touch her or I'll make sure to beat you up if I see you just once more in my life," he threatens me without knowing I could kill him. "She stays with me and you should stop calling her a sister when you do not treat her like one."

"The way I treat her doesn't regard you, that's our life and our privacy-"

"You're dead wrong dude," I chuckle but bite my lips to not blow a fuse in front of y/n. "She's my girlfriend so I will not allow anyone to touch or hurt her, alright? So you better remind yourself that you're just a damn bro for her and stop thinking she's your toy or object."

"Give that phone back to her," he doesn't argue anymore as if he was out of argument but I refuse. "No and don't try to call her again, we're busy," I hang up.

"Jungkook...why did you have to say that?!" she panics after hearing my last sentence but I lean over her and put the phone back on the nightstand. "We don't give a fuck," I lie down and make her follow my movement. He's going to kill us...you shouldn't have..."

"He will kill me, not you, 'cause I'll kill him way before he could try to do something to you," I put my head on the pillow and bring her closer to me. "Dammit...Jungkook..."

"Let's not talk about it," I peck her lips and try to drift her mind away from this. "Kiss me..." I smile but lay my hand on her hip, to ask for her attention and just go back to what we were doing.

/ end of flashback \

"I drop y/n off at your house then?" Mino asks to be sure but I agree. "Yep, then we can get to the supermarket together," I try to make it as natural as possible, not wanting y/n to think get suspicious. "Alright, but I'll need to pee first."

"Alright..." I chuckle but lean my head back on the seat, to relax a little.

•••

4:30 pm.

[ you stay in my bedroom and lock the door, alright bbgirl?❤ >

I send a text to my baby now that I'm on my way to Minkyu's house with Mino.

< yes... ]

[ hey, I want a 'Yes daddy, I am going to stay in your bedroom like a good girl and lock the door to reassure you' 🥺 >

< you left your bbgirl all alone. So no. Sorry. ]

Damn. That text is so cold.

[ I'm gonna spank your pretty ass once I'm home😊❤ >

< good🤗❤ ]

I smile but shake my head. I lock my phone and lay it on my lap. "Are you going to fight?" Mino asks now that my eyes are off of my screen but I elbow the door next to me and rest my head on my hand. "I think it's unnecessary to believe everything will be fine. We're gonna go insane and cause a serious fight but I don't care, after all the things he did to y/n I just want to beat the shit out of him."

"Has she talked more about the things he sometimes does to her?" he lets out of his mouth without even realizing how hard it is for me to hear this. "Yes, she did...yesterday..." I rub one of my eyes but look out of the window. "After that call...I asked some things because I couldn't help but want to know...and...she told me he once slapped her but...this motherfucker manipulates her so much that she thought she deserved it because of the way she acted but when I asked her the reason why he did it, she said it was because she yelled at him and told him to shut up after he told her she would be considered as a slut for dating me..."

"How the fuck can he say that to his little sister?" he thinks the same way than I do about it and sighs heavily. "After that day, he went to her and apologized. He said he didn't mean to say that but that his anger took over him only because he cares a lot for her and doesn't want her to be hurt...the way she was talking..." I exhale sharply at the thought of it. "I could see she was putting all the blame on herself and defending him...he tells her all the time that he loves her a lot and just wants to protect her, that he sometimes says some words without meaning them but just because he's trying to keep her away from guys who only want her for sex..."

"Wow, this guy is a real shit," he speaks facts. "I could see it when she was next to me, she was almost scared to say too much. You know...I feel like the bruise she had on her thigh was not because she fell down. I'm pretty sure he got mad and pushed her because she didn't want to do anything...then he mentioned the alcohol again to be forgiven."

"Yeah...I thought the same...but she told me it was caused by that, he just wanted to have sex and I guess she tried to move away but he forced a bit and made her fall..." the pain and anguish burn me from the inside the more we talk about it. "I keep on thinking about the videos though...she didn't seem uncomfortable when I mentioned it to her but...what if he's the one forcing her to make them just to jerk off in front of it...? I didn't dare ask her...but she said something that makes it even more possible..."

"What did she say?" he peeks at me and stops the car at a red light. "That he sometimes asks her to dance for him...but she never does it...for what she's saying about this it seems to be just her will to do those videos, I'm pretty sure she isn't forced to do them but I don't know..." I lick my lips but comb my hair back. "The only thing she said about it was that he just asked her that to help her to improve...like...I can't even imagine the bullshit he must have said for her to believe he's a good and caring guy. It's obvious he's just a pervert who wants to fuck his stepsister. That disgusts me to even imagine what he must have been able to do without being caught by the parents."

"This little girl is so kind and gentle that she doesn't realize he's using her..." he turns at a corner as I can see on the GPS we're soon there. "Or maybe...she doesn't want to imagine that his stepbro is a pervert who touches her with sexual intentions..."

"Maybe..." I clear my throat but check my phone. "Anyway...let's talk about something else. I need to be calm once I arrive if I don't want to kill him right away."

"Yeah," he understands me, to my greatest relief. I really need to find a way to not go insane before going there otherwise I know I'll make it start badly. "So...since you want to talk about something else...have you done it with her?" he smiles but asks it in a soft manner.

"Yes...that was amazing," I nod but feel my lips curving up. "I saw the marks around her neck and the hickeys she didn't even cover so since I noticed you were very close, I understood those marks were not for a bad reason."

"I kept on worrying about her seriously...I thought I wouldn't be able to do it with her because of the pain she was feeling..." I bring my fingers to my mouth while looking in front of me, biting my nails and thinking about that night. "I told you, you're too big for her."

I chuckle but drift my eyes to the little girl passing in front of us as Mino stopped to let her cross the road. This girl looks like she's six and she's all alone when it's getting dark, where are the parents?

"Would you let your kid go to school and come back all on their own if it was a girl?" I suddenly pose a question after seeing her. "Hell no dude," our minds think alike and he goes back in the road. "No matter what I have to do, I drive my daughter and go pick her up until she's eighteen. I ain't letting a young girl walk all by herself when I know all the perverts there are."

"I thought I was the only one thinking like that..." I keep on biting my nails but think about my baby. "I can't even let y/n go to school or come back from it without having anyone with her so...let alone if it was my daughter."

"I know right, and if she complains, I'll tell her that she should be grateful to have a caring dad like me who takes his time to drive her to school every day even if he's tired and has to work...and blablabla..." he smirks while talking. "I'll use emotional blackmail and make her feel some empathy for his dad who loves her."

"You'll be a creepy dad who will follow her with your car if she has a date," I laugh at the thought of it, imagining this well given how he is. "I know but bro...I would just be scared that something bad could happen...I won't do stalk her or not let her have a boyfriend or girlfriend but I will want to be there for her as much as I can even if it's a bit too much...I'll just explain to her why I do it...and maybe she will want to be with me instead of being all alone outside when she has to go to school...I know what can happen to girls who are alone in the streets dude...I wouldn't want this to happen to my daughter..."

"I know..." y/n fills my thought again, hoping she's not thinking I left her alone at my house to go out with my friend only. "What do you think she's going to do if I go back home with injuries...?"

"Cry," his answer follows my question rapidly. "And probably punch you for not listening to her," he stated what I didn't want to hear but I deal with this truth. I close my eyes and rub my fingers through my hair, ruffling them but feeling nervous about what will happen once I'll be in front of her.

"Try to control yourself Jungkook..." he reminds me as if I didn't know. "Even if you punch him out of anger...try to...just thwack him to shut his mouth but nothing more...don't get into trouble."

"I'll do what I have to do, that's all," I don't promise him I'll be kind but just prepare him for something serious. I know myself too well, this guy is going to bleed to death. "Think about y/n when you do it. That will maybe help you to not kill him."

"Uhm. No," I look at him but drop my hand on my thigh. "That will make me punch even harder just to think about what she told me. She's my baby and this son of a bitch dared to lay a hand on her and manipulated her so I'm gonna make that guy cry his eyes out."

5 minutes later...

"Stay here, alright?" I comb my hair back but hold the door open. "Alright..." he agrees reluctantly so I get out and close the door behind me. I tuck my hands in the pockets of my jacket and walk up to the door of the house. I'm not feeling any nervousness, neither fear, I'm just on edge and ready to throw hands.

I lick my lips once I face the door and knock on it. Just the sight of his face is going to boil my veins but I need to stay calm as much as possible.

The door opens after some seconds only but once my eyes land on him, I grit my teeth. He chuckles as soon as he catches sight of me but acts all mighty. "What the fuck are you doing here asshole?" he bites his lips but moves forth, peeking at the car parked in front of his house as if he was looking for his stepsister. "I'm here to make things clear with you."