Osomatsu-san Oneshots (Book 3)

Alternate Universes (Karamatsu x reader)

Quick Note: reader is staying with the brothers for 2 weeks while her place is being fixed up. Karamatsu and reader are dating and have been together for a year.

This may also not be as good but I hope you enjoy regardless😊

I was in the guest room trying to sleep when the door slid open and shut quietly. I turn on my other side to see Karamatsu. "Hey Karamatsu, you're still up too I see." I say and he smiles before walking over "I can't sleep. I need you by my side princess." He says and I scoot over to let him slide into the futon. "That's not the only reason I can tell." I say and he hums "What is it?" I ask and he hums while walking his fingers down my side.

I hum as he lays his hand on my hip and that's when it clicks what he wants. I smirk softly and bite my lip before pushing myself closer to him. He hums before kissing me and I kiss him back. I squeak softly as he turns to be on top of me. I wrap my arms around his neck and pull back with a soft moan as he grinds against me. "You sure? Your brothers may hear~" I coo and gasp softly as he kisses my neck.

"That's fine." He says as he reaches his hands up to cup my breasts. "I want them to hear call my name~" he purrs and I blush before pulling him into a deep kiss. He hums and moves to tug my bottoms off. Once they were off he pulls away to push his bottoms down.

"Let's have our fun y/n~"

I fell back to the futon with a series of soft pants and huff as Karamatsu collapses on top of me. I crinkle my nose and playfully shove his shoulder "You're so sweaty~" he chuckles and lifts his head to kiss my forehead. I smile and shudder as he pulls out before he lays beside me. I turn on my side and smile before snuggling up to his chest.

Then I had a strange feeling.

I hum and furrow my eyebrows "You alright y/n?" He asks and I nod "I just..I just got this weird feeling all of a sudden..it's hard to explain." I say and he hums "Did I go too hard?" He asks and I shook my head "no it's not that...maybe it'll go away in the morning." I say and snuggle up to him with a blissful sigh. He holds me close and we drift off to sleep.

I woke up with jump and sat awake. That feeling was stronger and it didn't want to go away. I place a hand on my stomach where the feeling resonates. I hum and glance at Karamatsu who was sleeping soundly with a smile on his face. "Maybe he did go hard" I say to myself before getting up "or I just need to use the restroom." I say before exiting the room and going downstairs.

I let out a soft yawn and made my way to the bathroom but froze when I got a strange feeling again. I pause and turn towards the living room door. I turn towards the door with a hum before shrugging and heading to the bathroom. After using the bathroom I head back upstairs and get back into the futon.

That feeling not going away.

When I woke up again it was because of a crash downstairs. Karamatsu and I both shot up. We turn to each other and after he pulls his pants on we rush downstairs alongside the brothers who had also been waken by the noise. As we walk downstairs I hear a shouts of confusion but no talking.

Then I hear a voice yell

"Would you all shut up!!"

I jump slightly as I was startled and saw that the brothers looked very concerned. I hum and glance at the brothers. "That..That sounded like.." I turn my gaze to Karamatsu and so do the brothers. "Yeah..sounded like Karamatsu." Osomatsu says and I hum before walking to the living room door. The brothers told me to not to but I ignore them and slide the door open.

My eyes widen and I stood frozen in place. I saw 8 different looking Karamatsus in the room. They were all staring at each other while also looking around the room. I jump slightly when the one dressed in a suit meets my gaze. He gave off an intimidating aura. Though that aura seemed to go away when he glances me up and down.