Chapter Text
Inko sat in the waiting room as Izuku was getting his check up from Dr Marikawa, they’d been putting it off for a while while Hisashi was out of town getting his affairs in order it wasn’t like he didn’t expect this to happen, but complications arose and despite it all she couldn’t put it off any longer despite how much they wanted to. Still if Izuku was going to manifest a quirk it had to he soon.
Inko only realized she wasn’t paying attention when a loud bang startled her enough to make her get up and rush into the room to see Izuku swallowing his doctor whole her long shapely legs kicking with her shoes flung far away having banged against the wall. Inko watched as Izuku swallowed getting the doctor in and finally with one last gulp he pulled her inside his stomach sighing in relief before burping. Inko snapped out of it finally realizing she had to make herself and her son scarce before someone came and asked questions.
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Inko sat looking over the doctor’s test results with a critical eye as it explained, surprisingly extensively, how Izuku’s quirk worked. “Hammer Space. Some kind of warp based quirk factor to store anyone eaten alive.” Well that did alleviate her worry about her son being a killer. “Memory alteration?” Reading through that part had been enlightening, so long as no one saw Izuku eat someone no one would remember the person he ate and no record of them would exist. Inko quickly pulled out her phone and typed in Shizuka Marikawa and was greeted with nothing, no record that the woman ever existed. Given how, even as a straight woman she had to admit, drop dead gorgeous the doctor was the idea of her vanishing into thin air unnoticed had been something that ate at Inko the entire car ride.
They’d paid good money to go see an especially great league of doctor so the idea that one of Shizuka’s renown being unaccounted for any length of time should have set off a bunch of red flags but there was nothing, 2 hours later and no pro Hero was breaking down her door to drag her boy to tartarus. Still if this Hammer Space idea was true then. “Izuku could you please spit the doctor out, if you try hard enough i know you can do it.” Izuku looked at her like she had taken his favorite All Might toy away, Hizashi had laughed about that for weeks. “But mom she was delicious I don’t wanna.” Inko realized she should be worried about the fact that her son didn’t see devouring a person whole because they tasted good as a problem.
But she knew from the Doctor’s notes it was just because of the mental disposition his quirk gave him. Figuring out how to best word this was going to be a little tricky. “Izuku you didn’t ask the doctor if she wanted to be eaten no matter how delicious she is you cant just eat people without their permission it be like if Katsuki was to take your All Might action figure without you saying its okay because its fun to play with.” Comparing a human life to a toy was again not the best but Izuku was five it’s not like he had a whole lot to compare and contrast with, if she wanted him to understand she had to be simple.
Izuku’s face scrunched before he nodded looking bashful. “Okay mom.” Izuku made a face before he clenched his stomach and inhaled hard, Inko took a step back before Izuku bent forward and heaved and Inko watched stunned as a full figured woman flopped right out onto the floor hugging herself in bliss as she hummed in contentment.
“Shizuka maam are you alright?” She quickly sat up looking almost disappointed at her surroundings. “Fine actually though I’m surprised you let me out all things considered.” Inko flushed as Izuku smiled. “Well I didn’t want Izuku to get in trouble but i thought it best to do the right thing.” Shizuka shook her head. “It’s fine not like he ate me on purpose i tripped while looking in his mouth and fell in before I realized what was going on. I don’t think he can just spit you back up if you end up halfway in.” So that meant Izuku had to fully devour something to spit it back up, that could be an issue in the future. Still as long as the Doctor didn’t have to many problems with htis whole thing then it was likely to just vanish under the rug, making Inko sigh in relief.
“Can i eat you again?” Inko turned pale. “Iz-“ Shizuka beat him to the punch grabbing his hands and smiling motherly. “Of course you can Izuku it was wonderful in there! Your hammer Space is a paradise!” Izuku smiled before opening his mouth wide and capturing her head and swallowed her again Inko watched him eat her even quicker without the doctor resisting this time. Izuku smiled as he gulped her all the way down and went back to playing with his toys as Inko just threw up her hands and decided she didn’t want to deal with htis so she would worry about it later, well he had followed her advice so at least no one was going to get eaten against their will, she hoped. How was he gonna explain this to his sisters?
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Fubuki rolled in her bed yawning as her covers fell over her, it was to cold for this but at the same time she couldn’t get comfortable with the blanket over her. Fubuki shivered even no as her door opened and her little brother let himself in. “Big sis are you cold? That old blanket bothering you?” She almost chuckled over the obvious question before noding as she sat up. “Izuku, wanna hug?” She held out her hands smiling as he smirked back and climbed up onto her bed. “I can help keep you warm with my quirk!” Fubuki raised an eyebrow before deciding to humor him so long as it wasn’t to dangerous, she doubted he was gonna breath fire all over the place, though their mom hadn’t actually told her what Izuku’s quirk was but the fact it was not fire breath like their fathers. “Sure Izuku.” Izuku giggled but instead of getting closer he instead positioned himself by her cold feet before lifting her legs up. “I’ll have you down in no time!” She opened her mouth to ask what he meant before he suddenly opened his mouth and held both her feet in them. ‘Wha-‘
Her confusion on what he was doing as well as the many logistical considerations was all that kept her from reacting as Izuku gulped hard and Fubuki was suddenly yanked up to her knees into her brothers gullet. Before she could string together a full thought Izuku gulped harder struggling to get past her butt. “Izuku, what are you-“ Another gulp and Fubuki squeaked as her brother pulled her in further and finally managed to get her the rest of the way in with only her hands sticking out. He held her hands for a little bit before pulling them in smirking as he patted himself on the back. He got a snack to savor and Fubuki could get a good night sleep not problem, he was such a good little brother, since she didn’t have to wake up until later than he did all he had to do was spit her out before he left for school.
Mom had told him he couldn’t tell everybody about this quirk, just that he could eat allot of different stuff for now. No one had to know he was capable of swallowing things bigger than himself, hopefully he would keep things like that to himself. Mom made him hero promise so he wouldn’t tell anyone not even Kacchan, though he was looking forward to spending time with him later this week. The door to Fubuki’s room opened wider and Izuku turned to see another green haired teen opening the door rubbing her eyes looking at him. “Izuku, what are you doing up so late? In this room too.” Tatsumaki had been a bit of a joke name for the Midoriya’s oldest, a name their father picked in exchange for Mom getting to get permanent naming privileges but his other sister owned it so he wasn’t complaining. Izuku smiled innocently even as he got over to her and looked at her shivering. “Big sis are you cold?”
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“Izuku, did you eat your sisters?!” Izuku looked sheepish as his sisters writhed in pleasure at his feet huffing and well rested. “I asked them if i could first.” Inko raised an eyebrow as the two nodded because technically he had and the HammerSpace was pretty great. Inko sighed feeling that wasn’t the whole story but was forced to let it go. “Fine but don’t expect me to be happy about this young man.” Inko went back to making breakfast now for 4 instead, as Fubuki sighed smirking at the window. “It’s getting colder every day now, think you could do that more often?” Inko stopped looking scandalized at her daughter. “Sure, but you gotta ask first okay MoM says i need permission.” Inko rolled her eyes deciding that she couldn’t really stop them if they wanted to and just kept cooking. At least their father didn’t have to worry about this for now.
Izuku was vibrating in his seat as Inko drove him to the sleepover at Katsuki’s house. Izuku was super excited to show Bakugo his new eat anything quirk after they got it registered as a random effect quirk. Keeping it unregistered was impossible because then that would get him listed as quirkless which was just plain a bad idea, but also because Inko was very unsure about Izuku having a listed quirk anything like his real one was just begging for trouble. They didn’t know what they were actually going to do yet but luckily Izuku would be fine as long as he just had a quirk listed as unknown. Quirks could he super situational or complicated so no one was going to ask to many questions if they just said they were unsure about what exactly Izuku’s quirk was. Though they had taken some time to experiment with it.
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Tatsumaki sighed bored as Inko tried to explain letting their brother swallow them whole was an issue if someone saw, like of course it would be a problem everyone thought it would be weird, but why did she have a problem with it so much. Izuku being a kid probably didn’t see it as any issue so Inko was probably trying to get them to see the possibility of an issue. She must have thought explaining it over and over would eventually get them on her side. “Sounds to me like you should try it for yourself.” Inko paused before looking at her daughter aghast as Fubuki sat there looking at her phone unaware of the idea she’d just given her big sister. “That’s a great idea!” Inko barely had enough time to turn her head to Tatsu before a green glow surrounded her and lifted her into the air unable to move. “Izuku come here!”
As she heard his little feet come up the stairs Inko tried to glare at her daughters as they cooked up their little plan. “Yeah sis what is it?” Tatsu smirked rolling Inko around with her finger before smirking. “Mom wants you to eat her for a little while.” Izuku’s eyes lit up in excitement as Fubuki snickered at the situation. “Open big and wide Okay?” Izuku nodded quickly before he mouth opened as far as any five year old could as Tastumaki lifted their mother closer. “Okay let her out in about an hour okay?” Izuku nodded before Tatsumaki pushed Inko down into Izuku’s waiting maw.
Inko huffed in impotent anger as her head was shoved into her son’s gullet and in one giant gulp Izuku consumed his mother in one fell almost seamless swoop. Fubuki paused looking at her little brother as he rubbed his belly happily hoping mom and the nice Doctor lady had fun together while in there. “Should we be worried about the fact Izuku can swallow a grown woman with ease if he has some outside help?” Tatsumaki wiggled her finger smirking. “Of course not, what’re the chances anyway” Fubuki wanted to point out the chances wouldn’t matter if the situation called for it but shook her head and smiled softly deciding it didn’t matter if her brother was happy by the end.
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Inko didn’t like their smug faces despite how hard it was for her to actually be mad at them, for some reason. She just decided as long as they were careful and didn’t mess up too badly it was fine. Arriving at the Bakugo’s house was fairly easy she’d taken this route so many times that while she wasn’t willing to risk it she bet she could do it with her eyes closed. Inko smiled all the same as Izuku jumped out the car and leapt a few feet to jump hug his Uncle Mashiro. If Inko had actually been giving it any mind she would have realized that that jump wasn’t something a normal child could do but she paid it no mind as she told him to behave and have fun before driving off. Hopefully nothing to eventful would happen.
The boys happily exchanged comments before Izuku picked up a rock and bit it in half with ease. Katsuki’s eyes widened before he smirked like a maniac. “That’s awesome, you can eat anything?” Izuku smirked finishing the rock off before swallowing. “Anything i can fit in my mouth.” Katsuki’s eye widened. “We should test how much you can eat, we got a shit ton of scrap in the back just waiting to be thrown away.” Mitsuki shouted about language as Bakugo led Izuku to their huge backyard. Izuku really could eat anything, from rocks, discarded textiles, metal, wood, and even plastic the ideas for this quirk were genius. “Think we could make an underground base in here? Izuku nodded as he was led to the back of the place where things grew wild. “Keep watch i’ll eat.”
Katsuki turned around as Izuku got to work dirt and rock easily caving to his grip as he worked leaving him feeling fuller but not quite ful he was never full he never felt hungry, not the i need to eat now kinda hungry. Just that he always had room for more it was a hard kinda feeling to get. But he still had a job to do so onward ate.
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Shizuka raised an eyebrow at the clumps falling into the darkness as she picked them up. “I know i said he could eat anything but i never quite expected this.” She smirked to herself as the pile grew faster and faster part of her wondered how quickly time passed her because she couldn’t imagine Izuku was actually eating this fast but then if he could swallow a full person who knows what he could tear away at, maybe his mouth distorted space to allow him to swallow objects bigger than he would be able to otherwise. Shizuka shook her head deciding the examination would need more time and first hand experience she shuddered in anticipation at the next time Izuku would spit her out, she couldn’t wait to be eaten again. The image was slowly replaced by something much more wholesome of Izuku playing with the dirt trying to shape it and she snorted at the image of him trying to turn it into an All Might figurine. The pile rumbled to life and Shizuka jumped back in shock as the towering mass of the larger than life hero made itself known. Shizuka’s jaw dropped as she inspected it wondering just what had caused it before a thought caught her, that could be it. In her minds eye she imagined the dirt taking on a different form and watched as it shifted to look different than before still a dirt colored mound in a clearly different shape. Shizuka smirked in discovery, feeling her fascination flare, this is exactly why she loved being a quirk doctor. This was simply too interesting to pass up, though to test her other theory she needed to be patient for something else.
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Mitsuki jolted awake in the middle of the night to the sound of loud open mouth snoring as she spied her door wide open. Figuring now was as good a time as any to check on them she left her room with barely anything on. She didn’t even get far before spying Katsuki lying next to the low wall over looking the stairs. She gently moved him to the side slightly before hearing another snore and sighed fondly. She stood up leaving Katsuki tucked to one side of the walkway and looked down past the low wall to see Izuku open mouth snoring at the base of them directly beneath them. Mitsuki snickered as she thought it over before the loud pop of Katsuki’s quirk misfiring made her jump in fright. The split second it happened actually caused her to jump onto the low wall in shock, accidentally sitting on it as she twisted around to see Katsuki not even wake up as he moved around.
Mitsuki snorted slightly as she turned slightly to look into her room vaguely seeing that Mashiro hadn’t even twitched in his sleep. Mitsuki chuckled to herself leaning back to roll her eyes at what heavy sleepers they were, and immediately lost her balance falling back to the foot of the stairs where Izuku’s wide open mouth waited. Bizarrely, improbably, Mitsuki slid right in her weight and momentum enough to shove her all the way into Izuku’s hungry embrace with nary a swallow as the boy barely flinched at devouring a whole woman in a second. Izuku snorted in his sleep turning slightly as he dreamed of a hearty meaty taste.
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Mitsuki floated in a black void of contentment a surge of happiness and calm ripping away her panic as she floated down before she felt anothers hands wrapped around her around her from behind. She paused, confused as another woman held her close looking all too smug and seductively heated. Shizuka licked her lip happy that all to easily the perfect game piece had fallen right into her lap, she just had to wait for the results surely but right now, she smirked as she drew Mitsuki’s lips closer, now was the time for practical testing.
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Izuku’s stomach felt different, like he was fuller than before but he didn’t know why because he hadn’t held anyone in his stomach other than the doctor. But instead he felt like he had more than just one person in there, he needed to talk to his mom about this. Which was a problem because she had stepped out almost as soon as he was in the house. Annoyed as he was the fullness of his stomach, or maybe fullness wasn’t the word he wasn’t really full because be could absolutely eat his sisters and mom again and still have room to spare. But either way his stomach felt different for some reason and he needed to find out why, not like he could go see a doctor, wait he had a doctor! Izuku just needed to spit her out. Izuku began to heave only for the spit up to feel heavier than normal as he squatted down to really have a good foot hold.
Instead of just Doctor Marikawa another woman lips pocked and tongues dueling viciously emerged with her body pressed together so hard it was like they were trying to merge together. Izuku missed that part (all of it) as he huffed eyes scrunched as he coughed so roughly the two snapped apart. Seeing him really struggling the two woman moved to action. The Dr stayed to rub his back as he hawked and Mitsuki rushing into the kitchen to grab him a cup of water. Izuku blinked tears out of his eyes as he spied the water and took the glass gulping down hard as he could before another coughing fit hit him and he looked down as Mitsuki and the doctor realized what happened. “I guess letting two people out at the same time is rough on his throat.” Izuku finally recovered and cleared his throat before looking at her wondering something. “What are you doing here Aunt Mitsuki?”
Mitsuki flushed rubbing her arm embarrassed. “I fell into your mouth while you were sleeping.” Izuku paused suddenly realizing something. “Oh the after taste was you! I wondered where you were, i guess i thought you left for work or something.” Mitsuki shook her head smiling, it didn’t matter honestly but she would have to find a way back home soon enough. “Izuku, I’m guessing your mom wants you to keep this part of your quirk a secret right?” It’s what she would do in this situation after all. Izuku nodded carefully as the doc helped him back to his feet. “Well then don’t worry i promise not to tell a soul, even Katsuki alright.” She held out her pinky and Izuku smiled before locking it with his, Mitsuki smiled flushing slightly unable to think about the sultry look the doctor was giving her.
“Well you better get going, Izuku could you let me back inside?” Izuku nodded opening his mouth wide and waiting. Shizuka winked at Mitsuki making the say lusty sultry look that had pulled her in the first time. “Be sure to visit sometime soon Mitsuki, i’ll be waiting for you.” She stuck her head close and Izuku leaned forward taking it in his mouth with ease. Mitsuki watched entranced as Izuku swallowed the curvaceous woman in seconds gulping her down with ease despite his slightly sore throat before licking his lips. Mitsuki swallowed nervously before giving Izuku a little hug then standing up and leaving through the front door as Tatsumaki appeared down the stairs. “Oh hey bro, anything happen at your sleepover?” Izuku shrugged “aunt Mitsuki fell on me when i was sleeping and i ate her in my sleep.” Tastu paused before rubbing her face. “…………………..Okay let me text mom.”
The conversation that followed was very awkward, Inko wasn’t mad because Izuku hadn’t actually done anything wrong but it did make the whole situation with Mitsuki was quietly resolved and Mitsuki was calm about the whole situation. Inko sighed in relief getting off the phone but pausing as she watched Izuku happily devour Fubuki as Tatsu waited her turn. Inko groaned wondering just where her life had gone to get to this point. It didn’t really matter since she wanted Izuku to use his quirk as freely as he wanted to, but obviously within reason and she guessed the law more so for his sake than anyone else’s. Still as he he pulled down Fubuki and immediately jumped to Inko’s height and landed on Tatsu like a facehugger she couldn’t help the glee on his face made her happy.
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Shizuka fist pumped excitedly at having her theory confirmed as she danced happily. Time did pass differently in Izuku’s stomach, not quite to the extreme and she didn’t know the exact ratio, but Mitsuki had been gone outside for a few hours. Shizuka smirked thinking it over as she remembered the various touches gropes and writhing against each other. Mitsuki would be back sooner rather than later but maybe she could have some fun with Inko too. Not like they wouldn’t have the time. But Izuku probably wouldn’t want that, so she needed to keep on her best behavior beside she still had this to keep her company. Shizuka watched the dirt mound shift oddly before she sat down in her chair watching all the material collect itself in front of her. Interesting enough, she wondered how far this went, she sighed realizing she should have asked Mitsuki to help test this out as well. Peer review was important after all, oh well she’ll just have to wait on that too.