This was requested by sssha3  hope you like it sorry if it's trashy this is the first time I'm writing a poly smut I tried tho
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Background

Bakugo and deku are dating Deku also likes Kirishima bakugo kinda likes Kirishma
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It's the weekend Bakugo and Deku were in Dekus dorm cuddling and watching movies

Deku couldn't really pay attention to the movie he was to busy thinking about a certain red head he had a crush on him but he still loved his boyfriend

"Hey kacchan?"

Deku turned over to face Bakugo

"Hmm?"

Bakugo now looking deku in the eyes

"Would it be wrong liking you and another person?"

Bakugo eyes widen he was shocked who could Deku like Bakugo knew Deku wanted to try something in for their sex life but he didn't think about another person

"Why?"

Deku was scared to tell him that he also liked Kirishima and wanted to spice up thier sex life Deku looked down losing eye contact

"Because I like Kiri but I also love you and I thought about spicing up our s-sex life"

Bakugo smirked he put his finger under Dekus chin making him look at him with lust filled eyes

"Then call him and tell him to come over and if he agrees then we will both fuck you senseless"

Deku shivered thinking about it taking on two cocks at the same time he grew red with embarrassment Deku grabbed his phone and texted Kiri to come to his dorm

"Get ready baby boy"

Bakugo got off the bed and pulled out a light blue box filled with toys they will be using he opened the box and pulled out some rope setting it on the dresser

Bakugo pulled out a vibrator Deku stripped his clothes and got on his hands and knees his ass facing bakugo

Bakugo pushed the vibrator in Dekus hole causing him to let out a sharp moan

"Now be a good boy and wait for shitty hair"

Bakugo stripped down to his boxers and sat on a chair in the corner of the room with the remote turning the vibrator on 6 smirking as he wachted his boyfriend squirm

Kirishima saw the text Deku sent him he had a crush on Deku and a little crush on Bakugo but never told them

Kirishima is a top everyone thought he would be a bottom the way he acted but it was the total opposite he was very dominant in bed

He walked to Dekus dorm room as he approached Dekus dorm he heard moans coming from his room he slowly opened the door what he saw shocked him

Kirishima saw Deku naked on his hands and knees ass up in the air with a vibrator in his ass Deku was a moaning mess Kirishima got hard looking at the green haired male

"Uhhh deku?"

Kirishima didn't know what to say he didn't know Bakugo was there till he spoke up

"Shitty hair, the nerd wanted to know if you would like to fuck him with me"

Kirishima eyes widen he always wanted to fuck Deku but didn't think he would because he was  dating Bakugo but he was more then happy when he heard that

"Ofc I would love to"

Bakugo smirked looking at Deku he walked over to him and got the rope off the dresser flipped Deku on his back and tied his hands to the bed

Kirishima stripped all his clothes and walked where the two other males were Bakugo looked at Kirishima and motioned him over

Bakugo handed the box of sex toys to Kirishma he looked at all the toys and pulled out a cock ring putting it on Dekus cock

Bakugo pulled out the vibrator causing Deku bro whine from the lose of being filled

"Now now don't whine baby boy we are going to fill you up"

Bakugo lined his dick up with Deku entrance while Kirishima climbed on Deku putting his cock in Deku face

"Suck"

Is all Kirishima said Deku slowly began to suck on the tip swirling his tounge causing Kirishima to groan in pleasure

Bakugo slammed in Deku making him scream but was muffled because of Kirishimas cock in his mouth

Kirishima felt vibrations through out his cock making him let out loud moan gripping Dekus hair shoving his mouth on his dick

Dekus mind was foggy eyes rolling in the back of his head he was in pure pleasure he loved being filled by Bakugo and choking on Kirishima cock at the same time

"Shitty hair you wanna fuck his tight hole?"

Kirishima couldn't answer he was in pure bliss he just nodded his head and slowly took his dick out of Dekus mouth he leaned down and untied Dekus hands

Bakugo made deku sit up on his dick

"Look at you little slut"

Kirishima came behind Deku he spread his ass cheeks slowly sliding his cock in Dekus hole

"Nyaa f-fu-ck da-dd-ies s-so mhmm b-bi-g"

Deku couldn't form words the filling being filled with to cocks he felt like his insides were ripping

"Fuck you're so tight"

Kirishima and bakugo slammed into deku at the same time causing Deku to scream gripping bakugo shoulders throwing his head back onto Kirishima

"DADDIES!!"

The two tops showed no mercy slamming into the bottom the room filled with moans and skin slapping

"T-t-take nyyaaa ahh i-it o-ff p-please mhmm"

Deku couldn't take it he wanted to cum so bad both males hitting his prostate each time they thrust in but he couldn't the cock ring stopped him

"What do you think shitty hair should we let the little slut cum?"

Deku moaned he liked being called slut Kirishima smirked and looked down at Deku kissing his neck and sucking on it marking what is his

"I don't see why his been a good boy"

Kirishima took the coke ring off of deku as soon as he removed it cum covered Dekus chest some on Bakugo

Deku felt better but now is super sensitive Kirishima and bakugo didn't stop thrusting in him making Deku a moaning mess

With a few more thrust both males came in Deku hole Deku came again covering his chest and face with cum

Kirishima pulled out first then Bakugo watching cum leak out of Dekus ass Bakugo got a towel and wipes handing them to Kirishma as they began to clean up as Deku lied on the bed panting eyes drooping

"Yo shitty hair want to be our boyfriend?"

Kirishima always wanted to be their boyfriend so he didn't have think about his answer

"Yes"

Once they cleaned up both tops cuddled up to the shorter male falling asleep

See ya kiddos~❤️

Omg I tired so hard I know it's not the best and kinda rushed I haven't wrote a threesome smut before but I hoped you enjoyed I'll try to get better and do them more often again I'm sorry I did try tho