Kinktober 2025
Day 3: Impact Play
Matthew Kim (Kard) x fem!Reader
Word Count: 1,036
Genre: Smut, angst, a hint of fluff
AUs: Non-idol AU, established relationship
Rating: Explicit, Minors DNI!
Summary: You decide you've had enough when your boyfriend invites his friend over on a day that the two of you planned to spend together.
Warnings: Lowkey toxic relationship, smut (dom!Matthew x sub!reader, spanking, brat reader, daddy kink, implied round 2). If you think that I missed a warning, please let me know!
Networks: @cosyhomenet, @winerys-collection
A/N: If you would like to be added to my Kinktober taglist, you can send an ask, send a dm, or comment on any of my Kinktober-related posts with the username that you'd like tagged. Happy reading!
Taglist: @xomakara, @chugging-antiseptic-dye
Fic is under the cut.
All you’d wanted all day was to spend time with your boyfriend, but every moment alone was interrupted by Matthew’s friends or family. You knew that they were important to him, and you tried to understand that he wasn’t ignoring you intentionally. So, you really tried not to show how upset you were. As he pushed your plans aside to invite Taehyung over, however, you couldn’t help but ask if they really couldn’t hang out another day.
“I can’t just leave him hanging, baby,” he’d said apologetically after the plans were made.
“But you can leave me hanging?” you mumbled, both hoping that he would hear you and that he wouldn’t. If he did, he didn’t show it, and you didn’t know if you were relieved or hurt.
Taehyung showed up ten minutes later, clearly struggling. You felt a pang of guilt over your reaction to the new plans, but in the end, you knew you couldn’t control how you felt. So, you decided to just stay calm and have a conversation with Matthew after Taehyung left.
Your plan changed about two hours after Taehyung arrived. By that point, it was late, even by your standards, and you were more frustrated than you could even really put into words. As Matthew and Taehyung sat on your couch and talked about whatever the hell they wanted while you felt like an outsider in your own home, you had an idea.
It started small, with lingering touches every time Matthew joined you in the kitchen for more snacks or a quick question about where something was. He said nothing about the way you touched him, but you could see the way he looked at you. There was a mix of arousal and frustration in his eyes that you knew all too well, and you were certain that your plan to finally get his attention had succeeded.
At least, you were certain until he stopped talking to you completely, only acknowledging Taehyung. That was when you decided you’d had enough, and you did everything that you knew would get under his skin but had held yourself back from previously. You made a point to bend over in front of him every time the two of you were alone in the room. You told him how sexy he was when he was mad every time you noticed that he looked just a little bit more pissed off than before. You even made a few flirty comments toward Taehyung, giggling every time he looked at you the same way Matthew usually did.
Eventually, though, Taehyung did go home, and that was when you knew beyond a shadow of a doubt that Matthew had gotten tired of watching you act like a brat in front of his best friend.
“Bedroom. Now,” Matthew said as soon as his front door was shut.
“But I would rather stay here,” you replied, your voice dripping with false innocence as you silently dared him to do something.
“Well, that’s not happening. Bedroom. Now.”
With an exaggerated roll of your eyes, you said, “Fine,” and went to your room, filled with silent satisfaction and anger as Matthew followed you. You knew he could hear your frustrated mumbles on the way, but he didn’t acknowledge them, which only added to your frustration.
When you got to your bedroom, he looked at you and said, “What the fuck was that?”
“I wanted attention,” you answered matter-of-factly.
“Well, you certainly have my attention now. Bend over.”
“Why should I?”
“Because if you continue testing me your punishment will be worse. Bend over.”
“Yes, daddy,” you mumbled as you followed his instructions.
“Now, was that so hard?” he asked. You didn’t answer, not wanting your punishment to be any worse than the spanking that you knew was coming. “That’s what I thought. Now, I’m gonna give you ten, and I want you to count them. Ok?”
“Yes, daddy.”
The first spank was harsher than you expected, and you winced as you started the count, but part of you loved the pain. You didn’t think you’d enjoy being spanked when Matthew first mentioned it at the start of your relationship, but you were willing to try most things once. When you actually did try it shortly after your first time together, it became your favorite way for him to punish you.
Each hit hurt just a little bit more than the last, but you didn’t mind it. In fact, a punishment was exactly what you’d wanted, considering that it was a sign that he wanted you. In the end, that was all you wanted.
Before you knew it, your punishment was done. After Matthew gave your ass one extra smack, he sighed and said, “Get up.” You did as you were told and turned toward him, and he asked, “What the fuck was that about?”
“Just wanted you today,” you mumbled, looking up at him for the first time since before the punishment had started.
When you looked into his eyes, it was like you could see everything click in Matthew’s head. With tears starting to fill his eyes, he pulled you into a hug and said, “I’m so sorry, baby.”
That was when you told him everything that you’d held in all day, from how badly you wanted to spend time with him to how hurt you were that he’d invited Taehyung over to why you started acting out in the first place. Matthew held you while you explained, soothing you as tears you didn’t know you were holding in started to fall.
Once you finished explaining, Matthew kissed the top of your head and said, “I’m sorry, angel. I was such an idiot. Let me make it up to you. For the rest of the night and all day tomorrow, I’m all yours. No interruptions.”
You practically lit up as you asked, “Really?”
“Really.”
The room was silent for a moment before you whispered, “I love you.”
“I love you too, baby. I’ll let everyone know that I’m busy in the morning, ok? For now, I wanna show you just how much I love you,” he said as he gently pushed you onto the bed and spread your legs apart.
If you'd like to see what else is in store for this month, the kinktober 2025 masterlist can be found here. If you wanna check out my non-kinktober works, my masterlist can be found here. If you wanna see what I'm working on, my upcoming works list is here. If you'd like to be tagged whenever I upload a new fic, my taglist form is here!
Thank you again for reading, and have a wonderful day!
