taishiro "fat gum" toyomitsu x size difference x fem!reader
word count: 3.1k
contains: size difference, choking, blow jobs, fingering, pro hero related emotional trauma, slight pain kink, belly bulge💖
a/n: soft fat gum sex because he deserves to be loved in all of his forms💖💖💖💖
kinktober II: multiplayer masterlist
Fat Gum came in the door and was aggravated. The mission didn’t go well, and with the extra paperwork due to poor decision making on his intern's part, he didn’t get a chance to shower while they were still cleaned and not filled with the musky sweat of others. He didn’t expect to have to break up a fight between Kirishima and his boyfriend at his office on the way out the door either. While he might have laughed it off and sent them on their way, today their boisterous attitudes just compounded his sour mood.
Tomorrow he was going to have Kirishima and Tamaki spar quirkless until they passed out. Fat Gum just wants to go home and relieve his stress. Taking a thorough shower, getting into his house clothes, and probably falling asleep with you in his arms. His plan for when he got home was something he was set on, but when he saw you everything changed. You must have just gotten out of the shower you took before he came back home, your hair was still damp, sticking to your neck and forehead, and he could smell the lavender soap coming from your body and hints of the eucalyptus trailing through the apartment from the bathroom.
He thought “shower eucalyptus” was a weird purchase when he first saw it but it’s become one of his favorite parts of showering at home. You knew that he loved it, because he was always the one who bought fresh eucalyptus to replace. He saw you in the kitchen making him a protein smoothie, adding in his favorite fruits to hide the spinach and kale that he hates but knows he needs, in addition to a curry simmering away on the stovetop.
The combination of all of these things, the consideration you take in caring for him, the way you try to find small things to make his life a little more comfortable, helping him in small ways with his pro hero career. You are always acutely aware of him and his lifestyle, always trying to find small acts of service or lifestyle changes and he can’t even articulate how much appreciates you. Appreciates how respectful and understanding you have always been with him the entirety of your relationship.
His anger and annoyance faded into just sheer affection for you. Wanting to find comfort in your arms, melting into one of the only people he could truly be comfortable with, regardless of his form. You were surprised to find his strong arms wrapping around your torso, rather than hearing him call out his entrance. Before you could turn around and ask /is everything ok/ or /how patrol was/ he had buried his face in the crook of your neck with an aggravated groan that answered your unspoken questions.
You gave him a quick acknowledgement “Welcome home, Taishiro,” before using the blender to finish his smoothie. The blending was done and you are left unsure of what to do because you can’t reach any of the cabinets to grab a cub without moving. He recognizes your hesitation and uses his long arms to reach up and grab a random glass without even moving his head. You could tell that it was a bad day before but now you know that it is worse than normal.
“Love, let’s get you into the shower huh? You can have the smoothie now and the curry will be done after.” He lets you guide him into the shower with him still clinging to your back. The water can’t get hot enough, not hot enough to get the feeling of failure and annoyance out of his body. He took almost twice as long in the shower, but he still felt the remnants of dirt and blood on his body. Taishiro wanted to be back in your arms because he knew you were here for him, it was something he could rely on and your touch always brought small waves of relief.
You had stayed in the bedroom sitting in an office chair waiting for him to get out of the shower. Hoping that he would be a little more open after following through with his routine. He had left the smoothie on the bathroom counter. Long forgotten to him but to you, it was just an additional sign that Taishiro was having a bad day.
He didn’t say anything while he dried off and changed into a pair of boxer briefs and shorts. You watched him walk over to the bed and take a second to appreciate the freshly changed sheets and fluffed pillows. There is a soft smile on his lips as he drags his hand over it. You do your best to provide him with any source of comfort or safety when you know that days have been bad but today it doesn’t seem to be working too well. It’s fine, you know that sometimes his brain and body just need the time and reassurance that everything is fine.
He perches himself on the bed so there is the least amount of skin in contact with the sheets and leaves his head hanging down with his hands crossed. You didn’t do anything until he spoke in a tone that was almost always reserved for aftercare, asking you to come over to him.
Words almost always came easily to him, so hearing him so soft and unsure you take what he says with the weight that it deserves. Him sounding broken is such a foreign concept to you, your strong and reliable boyfriend, so you prepare to deal with the worst. You come over and stand in front of him, trying to decide on if you should touch him, or sit next to him, not wanting to exacerbate his situation. You end up on your knees so you’re almost at eye level. “‘Shiro, we don’t have to talk about it, but what can I do to help? I just don’t want to make it worse.” The concern in your tone makes him melt, sure, his friends and peers checked up on him after rough missions but rarely did people genuinely see him, him not just a shield or battering ram that blows and bad thoughts bounce off of. You were different, you always treated him like a person with feelings not just the happy-go-lucky persona he portrays.
His hands reach up to your face and hover just a few centimeters before he cups your cheeks and pulls you into a kiss. Your hands wrap around one of his fingers, knowing that at the very least, that his hands seem to be a safe place to touch. “Just want you. You make it better” The words are mumbled against your lips and almost inaudible. Your response is slow, wanting to let him melt into the kiss before pulling away.
“You’ll let me know if anything I do is too much right babe?” Even if Taishiro doesn’t want to talk about whatever is bothering him from patrol he is obviously upset and not knowing the cause makes it harder to treat the symptoms. You don’t want to say something or push a button you didn’t even know was there. He smiles down at you. His large size dwarfs you even if he isn’t at his biggest. In fact he is a lot smaller than what he normally stays at which just lends to the fact that something went wrong at work. He knows you have questions dancing in your mind but are putting Taishiro first and not asking for Fat Gum and for that he is eternally grateful.
He gives you a slow nod and you can see the relief in his eyes at not being pushed for answers he doesn’t have. You crawl into the space between his legs that he left open for you. Your lips are back on his in an instant, but there's nothing fast about the kiss itself. Slow, sensual and done to drown in each other and forget the rest of the world. You can feel the tension in the air slowly ebbing away and your hands on his cheeks move slowly into his hair and base of the neck.
His groan is quiet but you can tell by the way he's leaning into the touch and kissing with more fervor that you are on the right track. The neck is a mere stopping point to you trailing fingers down his back and resting it on his thigh. His breath hitches and he leans forward just a bit suddenly, just enough to clack your teeth together painfully. You can’t help the innate reaction of tightening the fist in his hair, afraid of falling backwards.
Taishiro was always gentle with you, especially in this form, maybe frantic or rushed at times but always touching with care and consideration that you might break. Pain for him on the other hand, he was literally built to take it. Based on the glazed over eyes and the tip of his tongue peaking out of his swollen lips is evidence enough that now is one of those times and you thread your fingers through his hair slowly before gripping it tight. The hand resting on his thigh rubs soft circles into the fat providing a soft contradiction to the sharp pinpoint pain in his scalp.
His lifted hips are an invitation to remove his shorts, to progress a little further. You didn’t really realize how into kissing he was until you heard the slap of his thick cock against his abs and the hiss from his throat that follows. Sitting back on your haunches you can see Taishiro getting back into his head, the sight of his bruised smaller body just a reminder of his failure earlier today. Tension rebuilding as the heat from your touch fades, his gaze directed at nothing.
“Hey, hey, hey,” your hands return to his cheeks and there's a momentary flinch but with a shaky breath he leans in, placing a kiss into your palm, “I promise I’m not going anywhere. Let me take care of you.” He nods into your hands as he blushes from the soft kisses you leave on his temples.
Pushing his shoulders back to give you space, your too small hands move to grasp at the base of his cock, just barely managing to wrap around it before guiding it towards your face. A kiss left on his head has him twitching in your hands. He can't actully see your face but the precum covered lips pulled into a smirk is always plaguing the back of mind when you are on your knees in front of him.
You swirl your tongue around the dripping head and look up at him with the biggest innocent doe eyed look you can as you tilt your head to the side and lick up and down his shaft trailing thick veins and following your mouth back up with your hands. Years of practice means you know how he likes to be touched like this, how you’d originally thought it would be a duller sensation just to learn it was the exact opposite when he was a panting twitching mess the first time you touched him in this form. It is physically impossible for you to take more than the head of him in your mouth in his fat form but that just means you can focus all of your attention on the sensitive pink flesh while your hands move absentmindedly.
You situate yourself at the tip of his dick, lips just grazing his slit with a ghosting touch. “Go ahead. Use me,” punctuating your statement with a kiss. He’s hesitant at first. A slow roll of his hips barely moving in your mouth but the sheer volume leaves you gagging. Humming around him encourages him to really listen to your request, to *use* you. To take control you are freely giving him and using your entire body to get himself off and out of his head until you are choking on his cum.
It hurts, it always does when Taishiro does this. Every small shift knocks the breath out of you until your hands falter, one falling to play with his balls and the other trailing the sensitive veins with a burning ghosting touch. It doesn’t matter how sore your throat is the scratch in your voice, no, none of it matters when you can feel the precum sliding down your throat and hear him cooing down at you. Every little good girl and just like that ruins you in the best way possible. You would take an innumerable amount of pain if it meant that he would feel better.
The low groans coming from his mouth and the twitching of his thighs are indication enough that his orgasm is close. His hand presses down on your head with enough force to guide you but not keep you there. Tears streaming down your face as you are pressed as far down as you can manage to swallow around him until he shoots down your throat with a groan.
You can feel a little more of his cock slide into your throat as he’s basking in his afterglow. Looking up at him, you can tell he’s shrunk down a little bit, much closer to his slim form than he was before. The adrenaline pulsing through his body must have finally calmed down and it resulted in his form deflating to its current status.
Wiping the back of your hand against your mouth you stand up and give him a soft kiss on the mouth. It conveys all of the love and admiration you have for him but also coaxes out whatever is bothering him, a reminder that you love him and aren’t going to judge him for whatever he thinks is his fault.
He lifts you up by your thighs and sit against the headboard, all the while kissing you gently. “Can I take care of you now, buttercup?” You look at him for a moment, trying to decide if you want to pus him on his day but the haunted look in his eye advises you against it. Maybe before bed, but right now, in this instance, he isn’t ready and needs to have a purpose. If that purpose is getting you off, so be it.
After you nod in agreement, he turns you around so your back is against his chest. His large fingers gently pull your shorts and underwear down and you remove your top at the same time.
You can feel Taishiro’s attentive gaze on your body when you lay back against him. It’s no longer nerve-wracking because there is nothing your body could ever do or look like that he would judge you for. He loves you, not your body. Well, he does love it, but that’s beside the point.
He positions your legs over his thighs so you are open for the taking. Your cunt is already slick from the excitement of giving him a blow job in his bigger form. The size difference scratches something in your brain that probably shouldn’t be there. Nonetheless, anytime you can get your hands on him in that form is a good time for you.
One of his hands cups a good portion of your chest while his thumb flicks at your nipple. Your head falls back with a soft whine and he chuckles at how easy you fall apart for him. If that didn’t boost his ego then the absolute pornographic noise you made when his ring finger slides up your slit is. He’s still big enough that taking most of his fingers would be difficult without preparation. That doesn’t stop him from rubbing at your clit and watching slick pool on the bed until he thinks you’re as wet as possible.
He knows you want him and he knows that you like just a little bit of pain, so there’s no hesitation when he starts rubbing his pinky against your hole. It feels massive, larger than some of the men you’ve slept with before but you are more than ready. Your hips buck up attempting to get it to catch, but anytime you miss it just hits your clit again and leaves you just a little more desperate and sloppy in your actions
He gives in on the fifth try because he can’t stand the desperation in your moan, not when it would be so so easy for him to give you what you want. Just a little push forward and your body tenses at the stretch. It hurts, but the soft baritone of his course rumbling all around you and the warmth of his hand on your torso works you through it. He pushes in a little bit deeper on each thrust until he’s hitting the spot inside you that has you seeing stars.
One of your hands comes down to your stomach and presses down with a moan. “Fuck, ‘Shiro can feel you here. Mhm.” You can feel him shudder at how wrecked your sound and at the sight of your stomach bulging when he presses in.
“You’re so tight, baby. You’d feel so good on my cock.” Your pussy clenches at the thought of that. you don’t get to fuck him properly often with how difficult it is for him to get back to hero size. “Can you come for me, sweet pea?”
You nod frantically, feeling your orgasm building and burning like a live wire. He uses his thumb to come down to your clit and it’s clumsy due to the size but regardless the pressure he supplies is more than enough to have you screaming out his name as you grind down onto his hand with fervor, wanting to milk out every second of the pleasure.
You hear him humming and wake up on the couch. He sees you looking around dazed and he walks over chuckling. “You passed out, honey. I brought you out here while I changed the sheets and heated up dinner.” You smile up at him and see that his eyes are full of love for you and nothing else.
Loving a pro comes with its challenges and dangers but sometimes love is all they need to save them in turn.
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