Osomatsu-san Oneshots (Book 3)

Lucky Night 🍋(Karamatsu x reader) Lemon

For SoulStealerAsuna
This is going to be a little bit different as far as the writing.

So for some reason I got roped into a sleepover at the Matsuno house. I mean don't get me wrong I was friends with the brothers but I just don't know how they managed to convince me. We are all adults and yet we were having a sleepover like we when were 18. It was like when we were 18 because we watched a movie marathon with an variety of snacks. It was actually fun because it took me back to when we would sleepover as kids.

When night rolled around I went to the guest room where Karamatsu was setting up my futon. I back tract before he could see me and went to change in the bathroom. Another thing that this sleepover reminds me of is the awkward moments between me and Karamatsu, who I had/have a crush on. It sucks that I remember them because some of them were really awkward and embarrassing.

I still have a crush on him though at this point I think I'm actually in love with him. When I got changed and said my goodnights to the brothers I went to bed. I settle into the futon with a hum and shut my eyes to get some sleep.

But I couldn't sleep.

I just lay there with a huff and a small blush. I was blushing because the reason I couldn't sleep. Two reasons actually. One; my mind wouldn't stop thinking about Karamatsu. Two; I was becoming horny. I was pretty sure it was because the thoughts, even if they were innocent. I couldn't stop thinking about him and it made it worse.

I sigh and blush as I glance around the room. "If I'm caught it would add to the embarrassing/awkward moments from sleepovers...but I can't stop thinking about him..." I trail off and I bite my lip with a sigh as I made up my mind. If I was quick about it and kept quiet I wouldn't be caught. So I let my mind go wild and I surprised myself with how dirty my mind was.

I reach my hand down into my bottoms and blush when my fingers easily slip between my folds. I hum at the wetness I felt before I rub my fingers along my wet slit. I hum and push a finger inside. I moan softly as I pump my finger. I blush as I imagine Karamatsu doing it before slipping in a second finger. I moan softly and bite my lip "oh Karamatsu~" I moan and blush as I start to feel hot.

I huff before I pull my fingers out to pull my bottoms off and push the cover off. I shiver but hum at the chill of the cool air. I spread my legs and push the two fingers back in. I reach my free hand up to cup my breast and squeeze it. "Oh~ Oh Karamatsu~" I moan softly and use my thumb to rub my clit. I moan as I graze my g-spot. I bite my lip and push in a third finger. I was panting and moaning softly as my wetness was staring to drip and I feel my toes curl before I spread my legs to push my fingers deeper.

"Oh~ I love you Karamatsu~" I moan and tremble as I was close. "Oh I want you so badly~" I moan and arch my back while also tilting my head back. When I did I froze and stop what I was doing when I saw Karamatsu standing there with a blank face. I quickly pull my hand away and sat up with flushed face. His mouth became a thin line before he turns on his heel and walks off.

"W-Wait a minute!" I exclaim and hastily pull my bottoms back on before going after him. "Karamatsu let me explain!" I say as I catch up to him and grab his wrist. He wouldn't look at me. He just kept his back to me. "Non non non it's fine. No need to explain. I shouldn't have opened the door without knocking. I'll just go." He says and I could tell he was embarrassed.

"Look I'm sorry that you saw that but if you could let me-" "N-No really it's fine..j-just kindly let me go and I'll leave you be." He stammers and I hum when I saw the faint blush on his face. He also has that poker face of his. I hum and my eyes unintentionally drift down. I went silent.