Full of Cake

Yesterday was Shiggy’s birthday and after a lovely piece drawn by @fungusfangs on twitter I decided to write a birthday fic based on that drawing <3

Warning:contains bloating burps indigestion platonic rubs tummy noises tummy rubs

“Jeez boss. I’ve never seen anyone go so hard at cake before,” Spinner said while he stood over his leader.

That leader of course was Tomura Shigaraki who was currently sprawled on the floor and groaning miserably with frosting and some cake crumbs smeared over his lips. But for as much as he groaned it didn’t compare to how noisily his tummy grumbled. And the reason for its noisy complaining was likely because of how bloated it was. Shigaraki’s tummy was so full and round that it not only lifted his shirt up to expose his lower tummy but forced his pants to be unbuttoned and unzipped just to give his stomach some room to breathe.

“…So…m-much…cake…” Shigaraki moaned out. And judging from the uncharacteristically cute little birthday cap he had on it was a birthday cake he had just eaten.

“Was it at least good?” Spinner asked clearly not having been given a chance to taste for himself.

Shigaraki’s only response was a resounding burp.

“…Fair enough,” Spinner said.

He sat down onto the floor next to Shigaraki and stared down at the young pale villains bulging belly. It looked so perfectly round and downright heavy the way it jutted up and pushed his pants down. Its gurgling was so intense and noisy that it could have easily been mistaken for one of AFO’s Nomu containment chambers.

“…Unf…feels like I'mma burst…” Shigaraki groaned out in a strained voice.

Spinner frowned. He definitely didn’t mind seeing his boss get so stuffed but he wasn’t fond of seeing Shigaraki so uncomfortable. Especially on his birthday of all days.

He held up his scaly palm and asked “d'ya mind?”

Shigaraki brought a fist to his mouth and gave a thick closed mouth burp and then a softer one after that which left him huffing.

“…Ungh…fuck…go for it dude…”

Spinner nodded and placed his hand on Shigaraki’s tummy. His colder scaly flesh made Shigaraki flinch slightly until Spinner started to very gently rubbed little circles over the peak of that churning belly. Shigaraki groaned while Spinner continued to carefully stroke that glutted burbling tummy in an increasingly wider berth.

“How’s that boss? A-Any good…?”

“Ngf…ssssooo good…man…” Shigaraki muttered in a quiet groggy haze. Spinner could hear Shigaraki’s toes practically curling within his red sneakers from pleasure.

He was more than happy to continue his treatment.

So the young reptilian mutant swordsman continued to soothe Shigaraki’s turbulent tummy. His clawed fingers lightly scratched the tenser portions of Shigaraki’s hefty bloat. They chased across that smooth skin kneading into it and relaxing the tenser stomach muscles.

When he stroked Shigaraki’s tummy a little more firmly up and down its spherical bloat Spinner marveled at the way Shigaraki’s belly would sway up and down with Spinner’s hand. All that digesting cake within Shigaraki’s stomach had no doubt been liquefied into slurry by now. So all of that movement had caused everything inside of Shigaraki to slosh around a little noisily and add to the symphony of gurgles and groans erupting from his insides. The gurgling would settle a little bit every time they reached a fever pitch and resulted in a wet burp exiting Shigaraki’s mouth. Spinner would always pat Shigaraki’s tummy encouragingly after that and marvel at the way it jiggled under his hand with each pat.

Spinner saw how much less tense Shigaraki was beginning to look the more his claws expertly navigated across that gurgling cake-filled mass. So he rubbed more of Shigaraki’s belly. He pulled Shigaraki’s frosting-stained shirt up higher to expose more of his packed tummy. Then Spinner quickly got to work pampering more of it. He carefully rubbed his scaly palm into tiny circles across the side of Shigaraki’s belly while his fingers kneaded towards the center close to Shigaraki’s belly button.

“So were you just really hungry or somethin’ boss?”

“Huh?”

“I know you'n Dabi got crazy appetites but ya don’t usually down a whole cake,” Spinner answered. “Don’t get me wrong it was really impressive but just…unexpected…”

“…Ever seen me ‘round cakes or sweets before?” Shigaraki replied blandly.

Spinner blinked. Shigaraki’s junkfood habits were hardly a secret. But with all the soda he constantly guzzled it wouldn’t be too surprising for him to have a bit of a sweet tooth.

“…Guess you got me there. It is your birthday right?”

There was a deep burbling that erupted from Shigaraki’s belly. The villain winced but eventually clutches his belly and forces the gas up.

“YyyeeeuUUUUUUUHP!!!!”Shigaraki loudly burped the word 'yup’ out and followed up with a sharper burp after that. He huffed heavily after and patted his jiggling tummy in relief.

“Heh. Nice one boss.”

The lizard man continued tending to his boss’ heavy tummy after that bit of release. He had to admit. He quite enjoyed seeing his boss looking so much more relaxed and almost docile. When Shigaraki genuinely smiled in that non-creepy way of his it always lifted Spinner’s spirits. He was always happy to just help his friend out in any way he could.

“Ahhh…lil lower…” Shigaraki said.

Spinner tensed up and his cheeks grew bright and rosy.

“…Uhh…”

“Tch…don’t be such a pussy. I ain’t askin’ for a handy. Just rub a lower.”

The phrasing of his defense did nothing to quell Spinner’s blush. But if Shigaraki asked it then he wasn’t going to say no. So despite how bashful the young lizard was he began to move his hands a little lower right near where Shigaraki’s pants had been unzipped towards his lower tummy. It felt so much softer and more delicate than the rest of his gorged stomach. When Spinner started to rub over it he had it admit the extra smooth skin felt rather pleasant to the touch. And the way Shigaraki moaned with pleasure told him he was enjoying this too.

He continued to very gently stroke that delectably delicate underbelly and used his thumbs to knead tiny circles around the portion where Shigaraki’s happy trail would be. The villainous leader crooned in euphoric splendor. Spinner’s claws very gently scratched at the hefty underside of shigaraki’s tummy in the meanwhile. It was a cavalcade of stimulation that Shigaraki’s tummy desperately needed after eating so much cake by himself.

While spinner continued to rub it, Shigaraki’s belly gurgled noisily from the way his stomach muscles loosened beneath Spinner’s fingers. The young bloated villain winced and sat up on his elbows a little in a half-sitting half-hunched kind of way which made his tummy stick out more.

Spinner frowned when he saw Shigaraki’s face clench uncomfortably. He was about to ask his boss if he was okay until he felt Shigaraki’s belly rumble loudly. This was followed by a rumble rising up Shigaraki’s throat and resulting in time for a long burp to roll out of Shigaraki but cut off towards the end and left him panting.

“S-Sorry did I mess up or something…?” Spinner asked nervously.

“Ungh…shit there’s more in there,” Shigaraki mumbled and hit his chest a few times until a small sharp burp left his mouth and a weaker one chased right after it. “Fuck. Oi. Do me a favor will ya? Push down on my tummy.”

“…Do wha…?” Spinner asked a little confused…mostly by hearing his adult boss un-ironically use a word like “tummy” so casually.

“There’s like a fuckton of gas in this thing an’ I can’t push it up without makin’ myself sick again,” Shigaraki explained and patted his belly for emphasis. Spinner definitely felt his cheeks get a shade redder when he saw that pale bulbous tummy jiggle a little bit.

Nevertheless he wanted to help. So he put his hand down over the middle of Shigaraki’s tummy with his palm pressed right against Shigaraki’s belly button. Spinner could feel the pressure circulating so he kneaded for a few seconds and then pushed his hand down on Shigaraki’s belly which made everything inside of it slosh audibly.

There was a thick acidic burble that came from the push followed by a much louder gurgle that rose up Shigaraki’s chest. Shigaraki’s cheeks puffed out for a moment until he tilted his head back and let rip a gigantic burp. It ruptured out of the pale boy so hard that not only could Spinner feel Shigaraki’s tummy actually vibrate from the expulsion of gas but some drool actually flew out of Shigaraki’’s mouth from the force.

“…Holy crap that was massive…!” Spinner marveled.

Shigaraki huffed and gasped then quickly followed it up with a long throaty burp that lasted several seconds. More drool dribbled down his lips from its force. Even after that there was still more in there.
Shigaraki quickly grabbed Spinner’s hand with four fingers and guided it towards the side of his belly and pushed his hand down onto Spinner’s.

What followed was a truly colossal burp, louder and more forceful than anything he’d let out all night. It ripped out of his mouth so hard that several bits of saliva flew out of his mouth almost cartoonishly while Spinner felt Shigaraki’s belly ripple hard from the exertion. He instinctively pushed down more on Shigaraki’s belly gradually as he burped making it last even longer and only get louder and harsher the more it went on.

“…Dude…” Spinner finally said in awe when it ended.

Shigaraki gasped then immediately flopped backwards like a ragdoll; his bulging tummy jiggling heavily when he did.

“Ffffffuuuuuuck I needed that…” Shigaraki gasped out breathlessly with a euphoric smile of endless relief on his face.

After a few seconds of uncertain silence Spinner lightly tapped Shigaraki’s tummy with his index claw.

“So umm…you want me to keep rubbin’?”

A cute little after burp left Shigaraki’s mouth in response.

Spinner just grinned. “Whatever you say birthday boy.” And before long he was back to rubbing away at that smooth, stretched out tummy. He was just glad to give his boss something he actually enjoyed on his special day.

The fact that he enjoyed himself too was just a bonus.