HEADCANON ♔ poly!kiri-tetsu

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being in a poly!relationship with Kirishima and Tetsutetsu (BNHA)


the three of you dating had happened pretty quickly

• you and tetsutetsu were childhood friends, and grew up together. even when you both applied and we're accepted into UA, but were separated due to you joining 1-A and him 1-B, your friendship didn't even quiver. you were practically in love with him by the time you were 14, but didn't say anything due to not wanting to ruin your relationship in case he didn't feel the same. so you tried your best to find someone else.

• then you met kirishima. there was no doubt in your mind that you had been attracted to him because of the similarities between him and tetsu. you felt terrible for liking him just because of that, so again you tried to find someone else. but when kirishima asked to hangout, you couldn't say no to that smile.

• hanging out with kirishima allowed you to see a side of him that was completely different from tetsu, and you were falling hard for him. tetsu and kiri had met briefly before because of you, but neither really liked the other too much. you noticed a lot of tension between the two when you invited kirishima to eat with you and tetsutetsu for the first time.

• that same afternoon, as school ended, eijirou pulled you aside as the class left the room. with a nervous lip bite and scratch of the neck, he gave you a small smile and asked you out. you were ecstatic and said yes.

• of course, you were happy, but when you met up with tetsu after school to walk home—and he had a look of suspicion on his face when he saw you walk out with an all too happy kirishima—you felt a bit of guiltiness. like you were betraying him.

• the next morning, on the walk towards school with tetsutetsu, he grabbed your hand and intertwined your fingers, something that was un-normal between the two of you. you hadn't told him about your date with eijirou, and honeslty you weren't sure if you wanted to. you gave his hand a squeeze, then let it go. tetsu let out a loud and long sigh, then stepped in your pathway to stop you from walking.

• "look, i know you don't feel the same way and that you like kirishima better than me, but i'm gonna go ahead and say it because i'll regret it if i don't. i like you, [y/n]. i've liked you since we were kids."

• a mix of emotions ran through you. he liked you, but... so did kirishima. "i... i like you too tetsu. i have liked you for awhile now. god, i've waited to hear those words for what seems like forever now...but, i'm already with kirishima."

• "it's fine. seriously [y/n/n]. i knew something was going on with you guys before i asked."

• the rest of the walk to school was awkward and silent. you kept thinking of a way to fix this though. you wouldn't allow this to break you and tetsu up.

• "tetsu? i'm gonna suggest something, and please don't turn it down without hearing me out."

• kirishima was iffy and a bit annoyed by the idea, but (like tetsu) he agreed to the three-person-date. whatever would make you happy.

• the ice cream and beach walk date didn't actually go as bad as you had first thought it would. the ice cream part was quiet and awkward at first, but you encouraged the boys to get to know each other. by the beach walk, the two were making light and comfortable conversation while you walked beside the two; kirishima's hand in your right one, and tetsutetsu's in your left. and when they dropped you off at your home, you kissed each of them on the cheek and told them goodnight.

• "hah, she kissed me first."

• "shut up, she said yes to me first."

• by the next month, the boys had become closer and accepted the relationship. they often competed with each other over who loved you the most, seeing who could take you on the best date. but ultimately, the two knew that you loved them both equally. eventually, the boys learned to love each other as well.

• when you guys came out to everyone, some had expected and accepted it, some had already knew, and others didn't agree (i.e. bakugo found it very stupid that kirishima had to share his girl with another guy). none of you cared about others's opinions though, you all loved each other and it didn't matter what others said.

NSFW

• your guys's first time was, uh, different than others

• not wanting to let either of the boys feel left out, they took their turn inside you. right before you came, they each went inside you—eijirou from the front and tetsutetsu from the back.

• both of the boys are into biting. hardcore biting. they both got their shark teeth thing going on, so biting is a must.

• tetsu prefers your ass, and especially likes mouth fucking. eiji likes to take you traditionally, and really likes to titty fuck you a lot as well. they really like to come together while jerking onto your face.

• both of them love to give back. a lot of times they like to just focus on you some nights. each of them suck on a tit, while one fingers you and the other rubs your clit. oral plays a big part in your guys's sex life as well.

• kiri's favorite position is missionary. him in the front and tetsu taking you from the back, so he's able to see both of his lovers faces.

• tetsu's favorite position is doggy style. him grabbing your hair and pulling you back so that your back arches, while you suck off kirishima.

• threesomes are the most common between you guys, but sometimes it'll just be two of you. though once the other finds out they want to have the same treatment from the other two, focusing just on themselves.

[ um, yeah. i really love these two. like a lot a lot.
and not a lot of people write for them two together, especially tetsu. so, here, take this trash ]

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