Osomatsu-san Oneshots (Book 3)

Yandere! Matsu Bros x Innocent! Loli!reader

For Yandere_kohai

I let out a sigh as I sat down at the bar. I was at my high school's 10 year reunion and I was annoyed. You see I hadn't changed as far as appearance since high school. I was still short with the same baby face. Yet I was 28. I ask the bartender for a drink and he gave me an unsure look. I pull out my ID with a sigh to show him and he hums before nodding.

I sigh as I sip at my drink before I was tapped on the shoulder. "You're y/n right?" I hear and turn to see the Matsuno brothers. "Yep that's me." I say with a sigh and they smile. "Wow you haven't changed at all." Todomatsu says and I roll my eyes "yeah yeah I know. I'm still short with this baby face." I say and they hum. "Well we were just going to say that you're still cute." Osomatsu says and I hum with a blush.

"But as far as appearance you haven't changed either." Choromatsu adds and I nod "yeah...So what have you guys been up to?" I ask and set my glass down as I turn around in my seat. They glance at each other with hums and I raise an eyebrow before Karamatsu chuckles. "Well we haven't really been up to anything." He says and walks over to me "but what have you been up to?" He asks and drapes his arm around my shoulders.

I blush at the contact and hum "Not much. I mean I have a good job but that's it." I say and they hum. "What about a boyfriend?" Ichimatsu mumbles and I blush hard "oh no no no. I haven't had a boyfriend and I don't know if I ever will. I mean I'm 28 and look like I'm 18." I say and rub my arm. "Don't say that y/n! You're nice and super cute! What guy wouldn't want to date you?" Jyushimatsu says and I blush while Choromatsu gave him a look that I couldn't describe but it made Jyushimatsu go quiet.

"It's pretty boring here. How about all of us go out?" Osomatsu asks and I hum "it is kind of boring..sure let's get out of here." I say and they smile before I follow them out. It was nice to catch up with the brothers as we walk and we got to catch up even more when got to their place. I was a little surprised that they live in the same old house with their parents but I didn't judge.

After settling down in the living room I watch Karamatsu had to the kitchen. "I'm going to make some tea. Want any y/n?" He asks and I nod with a smile before turning to Jyushimatsu. "You've changed a lot. You all have." I say and they hum "Well of course we did. It's been 10 years." Osomatsu says with a laugh and I giggle. "Yeah I guess that's true but you guys we so different in high school. I mean we hardly talked but from just seeing you guys around...I can tell you guys are different." I say and they glance at each other.

"Different good or different bad?" Ichimatsu asks and I hum as he seemed tense. "Different good. Why?" I ask and they hum "it's nothing y/n." Todomatsu says and I hum "did I miss anything?" Karamatsu asks as he set a tray of tea down and the brothers shook their heads. Karamatsu hums and places a cup down for me. I took it into my hands and sip at the drink.

I glance at the brothers with a hum when I notice the weren't drinking theirs. They were just looking at me and I glance away "Um..Are you guys drinking yours?" I ask and they hum. "We will in a bit. Why don't you tell us more about yourself?" Karamatsu asks as he sat down beside me. "Huh? Well there isn't anything I can tell you guys." I say and take another sip.

"Are you a virgin?"

I choke on my tea and cough. I felt Karamatsu pat my back and I lift my head to stare at Osomatsu in shock. "Well are you?" He asks and I blush hard. "I..uh...yeah I am." I say and took another sip of tea. "Hm that's interesting." Osomatsu says and I glance up at him with a hum. "But it's good to know that her innocence hasn't been tainted." Ichimatsu mumbles but I hear it along with the brothers who nod while I just blush.

"Why is that good to know? You guys are acting weird." They turn to me and Karamatsu hums "Todomatsu. What time is it now?" He asks and Todomatsu hums "It's 8:30. So it's been 5 minutes." He says and I hum before shaking my head as things became fuzzy. "Oh? You okay y/n?" Choromatsu asks and I glance up with a groan. "I don't feel so good." I say before everything went black.

When I came to I heard Karamatsu say "Good thing she's light." and hear Jyushimatsu laugh "Yeah. Way easier to carry her." He says and I sat up with a groan. "Oh she's awake." Osomatsu says and I look at them with a hum. I cower back a bit at the smirks on their faces before I glance around. I was in what appeared to be a basement. I try to get up but that's when I felt something on my ankle.

I hum and glance down to see my ankle chained to the wall. I look up at them with a scared look. "Um why am I chained to a wall..in the basement?" I ask and they look at each other before chuckling. "To put it simply, you're meant to ours and we don't want to see you with anyone else." Osomatsu says and Karamatsu hums "We kept an eye on you throughout high school and made sure to keep you safe." He adds on before Choromatsu chimes in. "But we didn't want to overwhelm you or scare you away so we watched you from a distance." He says and I stare at them.

"But why chain me to a wall?" I ask and they chuckle "Wow we knew you were innocent but I guess you're naive too." Todomatsu says and I hum in confusion. "You're chained to the wall because we don't want you to ever leave our sight." Ichimatsu says with a sinister grin and I cower away with teary eyes. "Oh come on y/n. Don't cry." Jyushimatsu says and moves to crouch down in front of me. "We'll take good care of you." He says with a smile and I just look away.

"But I don't want to be here." I say with a whimper "oh don't worry. You'll get use to it dear." Karamatsu says and I keep my head down before I curl up on the floor. "Let's leave her alone so she can rest. She's had a long day." Choromatsu says before they all left and I hug myself tight as tears roll down my face.

They were all insane with bad intentions.

I don't want to think of what they plan to do to me.