HEFTY ABYSS OF SWEETS

This fic is inspired by some sumo artwork of K.aito drawn by @heftyabyssofsweets

DISCLAIMER! To avoid any fandom tags, all of the characters names have a little . In them, this fic is strictly for adults who are into weight gain!

This fic takes place during chapter 2 where K.aito brings S.huichi out to train for the first time and they have a heart to heart moment. Contains some S.aimota, fluff and bits of angst. Enjoy!

Night time yet again. Hours of darkness and quiet all to himself yet again. Even before he got dragged into this deranged game, he always felt so lonely at night. S.huichi never really had friends before, mostly due to his intense social anxiety which held him back. K.aede was the first one to somehow… break through his walls. Perhaps it was because of the situation they all fell into or maybe there was simply something special about her. Either way, she is gone now and S.huichi is left feeling more alone and afraid than ever before.

The detective tried to silence the voices in his head, all of them blaming himself for what had happened. He could feel himself slipping deeper and deeper into despair… when suddenly…

RING! RING RING RING RING RING RING RING!

Someone practically began to spam press his doorbell. The sudden loud noises startled the detective as he nearly jolted off of his bed. Who could possibly be wanting to see him at this hour?

He didn’t even think for a moment how this could be a planned murder for him, he heard an opportunity to help drown out his anxious thoughts. If someone wants to speak to him for what ever reason, then maybe the pain can go away, even if only for a moment.

S.huichi opened up the door, which had been nearly completely blocked off by a certain someone. The ultimate sumo. K.aito. He and S.huichi had a rather rocky start with their relationship, but since then it seemed as if K.aito was really trying to make an effort to become friends with him, even if it may have been a bit awkward at first. “Oh good, you’re up.” K.aito says as he smiles down at his friend, who was insanely tiny in comparison to him.

S.huichi glanced up towards his eyes, trying to make eye contact despite how tricky it can be for him. “K.aito? What’s wrong? It’s late.”

The sumo simply loomed over S.huichi, leaning in towards him until his belly slightly pressed against his much smaller body, the detective jumped a little as his eyes unintentionally look down towards his mass. “You busy right now?”

S.huichi stammered a bit, for he was quite flustered by what was pressing into him. “A-ah- no?”

K.aito grinned as he finally pulled away from the socially awkward young man. “Good! Then meet me in the garden. Don’t be late!” With that, K.aito waddled off, his whole body jiggling hypnotically.

S.huichi simply stared at him as he wondered off, trying to process what just happened. He started to wonder if it was such a good idea to follow him, given the situation they were all in. Still, he hated being alone, he hated being along with his guilt more than the possibility of being killed. He took a deep breath as he walked out that door and went to find K.aito, who had already made it to his destination despite his size.

It was easy to spot him, the giant of a man stood underneath the gazebo covered in blooming wisteria. The moonlight shines down upon him, illuminating the garden around him. S.huichi took in another deep breath as he pushed himself forward. This isn’t a murder. K.aito didn’t seem the type… then again… neither did K.aede, but she simply thought she was doing the right thing at the time.

K.aito spotted S.huichi and smiled at him once again. “Good! You came! I was starting to get worried you wouldn’t show.”

Still as timid as ever, S.huichi stood there awkwardly as his eyes looked everywhere but at K.aito’s. “Yeah umm… what did you want to see me for, K.aito?”

K.aito heaved a heavy sigh as he scratched at his head, the slight motion of his movement made his belly jiggle. “I haven’t trained since we got here… at this rate, I’ll get all weak. So… join me S.huichi.”

S.huichi looked at K.aito with wide eyes, of all the things he had to say, he was not expecting that. “Huh?”

As if S.huichi had already agreed to it, K.aito stomped his feet onto the ground and readied his body. It was clear now that he planned to have a sumo match with S.huichi. Literally the skinniest man out of everyone else here. “Come at me, S.huichi! Give it everything you got!”

“HUH?!” S.huichi felt as if his jaw may hit the ground as he looked at K.aito with a bewildered expression. “B-but K.aito! I’m really not the sort of person you should be um- challenging?” He swallowed hard as he stared at K.aito’s body, knowing he could get completely crushed by him.

K.aito scoffed a bit, he believed that he was simply being a coward and he knew that he would not last in a place like this with that attitude. He wanted to help him, in his own strange way. “Quit talking like that and just fight me!” K.aito cried out as he charged towards S.huichi, who froze like a deer in the headlights as he stares up at him, wide eyed and trembling.

K.aito did not need to push or shove in the slightest, his massive gut did all the work as it pressed deeply into S.huichi and sent him flying. “WHOA!!!”

S.huichi fell onto the soft grass below, which helped to break his fall even if only a little. He whined softly as he looked up at K.aito, who loomed over him like a soft mountain. “Tch… already? C’mon, man. I know you can do better than that.” K.aito reached down to help S.huichi up, who grabbed ahold of his pudgy hand and got back onto his feet, still groaning softly. “AGAIN!” K.aito shouted out. Before S.huichi could even say anything to testify, K.aito rammed his body into him yet again.

Poor S.huichi yelped as he tumbled over again, his weak legs gave out on him immediately. K.aito shook his head, feeling rather pitiful for him, still, he refused to give up on him. “You’re not even trying! C’mon!”

The detective whined some more as he slowly got off of the ground, K.aito readied himself, embracing for an attack of some sort. “W-why do I have to do this?” He asked meekly.

Although S.huichi did sound exhausted already, K.aito was not at all willing to let him have a break. “Now’s not the time to use your head, now’s the time to move your body! Now come at me, S.huichi! You can do it!”

Ignoring what K.aito had formally said, S.huichi continued to overthink this situation he got himself caught in. “But- I never even work out… I can’t do this.”

Regardless of what was said, K.aito stood firmly in place, his body still ready to fight. “Hey, don’t say that! The impossible is possible! All you gotta do is make it so!”

This bizarre logic of K.aito’s was hard for S.huichi to grasp, but even so, hearing that did make him want to push forward. He knew there was no getting out of this either way. With that, S.huichi charged towards K.aito, only to bounce back slightly as his body slammed hard into his belly. He almost fell backwards but managed to catch himself. “See? You’re already improving! Ya didn’t fall over that time.”

The constant encouragement was helping most certainly. Even if none of this made any sense to S.huichi whatsoever. The detective hurried back in but not with enough speed to push him back. He approached K.aito softly before he began to give it his all, pushing as hard as he could. Wanting to make things at least a little easier, K.aito held still and waited patiently for S.huichi to move him, even if it was only by half an inch. He pushed, more and more but K.aito still wouldn’t budge. S.huichi gasped and panted as he felt his whole body sink deeply into K.aito’s soft middle. “GAH! MMMGHHH!!!” He tried, so very hard to move this wobbling mountain.

“C’MON, S.HUICHI!” K.aito shouted out, he truely believed he could do it.

S.huichi continued to push, hard as he possibly could. It felt as if he was going to get lost in all of K.aito’s fat at this rate as he sinks in more and more. Now completely muffled by his body, all his grunts came out muffled. He squeezed in more and more but he still couldn’t get him to budge. Needing time to breathe, he managed to squirm his way so he was facing away from K.aito’s suffocating belly. “Argh! I-I can’t… I can’t, K.aito… why can’t you just find someone else to train with you?” So defeated, S.huichi pulled back and did his best to catch his breath.

His massive friend gave him a serious look. “Because this training is for you.” S.huichi looked back up at K.aito, surprised to have heard this. For a moment K.aito stared into S.huichi’s eyes, he can see some weakness in them as they shined in a certain way. “When I look at you, I can’t help but get all frustrated. Like, is the guy K.aede entrusted her wish to really that weak?” S.huichi tensed up for a moment, the mere mention of her name began to stir up all those emotions in him again. K.aito noticed this and started to regret his poor choice of words, his tone immediately went softer. “You’re the ultimate detective… But… you’ve been holding yourself back since then, haven’t you.” S.huichi remained quiet and kept his eyes focused on the ground beneath his feet, he had to try his best to hold back tears. “Hey… do you blame yourself for what happened? Do you think K.aede’s death was your fault?”

S.huichi tensed up and a few tears managed to leak out by then, but he still wouldn’t look back up at K.aito. “Y-yes I do… I made a deduction and it was wrong… and it led to K.aede…” he tensed up after mentioning her name, all the guilt hit him at once.

K.aito had suspected this and he shook his head at him, painfully frustrated to see the way he had been torturing himself. “Well that’s bullshit! Her sins and regrets are hers alone! You’re only gonna make her worry if you keep blaming yourself!”

S.huichi had enough now, he wasn’t able to take anymore. He finally looked up at K.aito, finally letting him see his teary eyes. “I know that! I know that, okay?! You don’t need to tell me!” K.aito immediately went quiet, he was taken aback by his outburst. S.huichi continued to sniffle as he buried his face in his hands, his voice now a soft whimper. “But I still can’t stop thinking about it… I can’t stop thinking about what I could have done to save her…”

K.aito frowned a bit as he watched S.huichi bawl his eyes out, feeling bad for him, he reached over and gently gave him a pat on the head. S.huichi froze up for a moment and looked up at K.aito with wide eyes. A part of him felt guilty as he was so certain he helped put those thoughts in his head, with their first major fight. “…there was nothing you could have done then. But what’s done is done. She would just want us to focus on what’s happening right now.”

S.huichi felt more tears building up, he tried his best to pull himself together but he was still falling apart. Seeing how damaged he is, K.aito knew what he needed to do. He gently pulled S.huichi close to his huge body, letting him sink into his fat much more gently and softly. S.huichi was a bit surprised at first, he felt himself blush a little bit as K.aito unintentionally guided S.huichi’s face towards his moobs. “K-K-K.aito?”

For a moment, K.aito felt ridiculous doing this but he still pushed on despite this being a little awkward. “It’s alright. Just hug me, ok? A hug… I find it always helps. I think you could really use one right now…”

S.huichi sniffles a bit, only now realising how comforting this felt. His body was so warm and soft, inviting in every way possible. For a moment, he threw all logic out the window and let himself cling onto K.aito. He gave in and lets his face get buried in between giant moobs, that jiggle gently around his head with every nuzzle. The moobs alone were much bigger than S.huichi’s entire head, he can easily get buried in them. K.aito blushes a bit as he can feel S.huichi press deeply into his body. A small guy like him can easily get lost in such a huge man like K.aito. Every single soft sob and muffled whine caused his whole body to wobble and slosh around him. K.aito blushes harder and harder at this but he still smiles a bit, even if all that extra jiggling was slightly embarrassing at first. “Just let everything out, okay? I don’t want you to bottle your emotions ever again, got it?”

S.huichi sniffles and whimpers softly, tears got lost in between the two mountains that were K.aito’s moobs. The detective then proceeded to try and wrap his arms around K.aito as best as he could, but he was nowhere near to being able to wrap them around his girth fully. His body was so wide and thick, it would be impossible to reach. Scrawny arms ended up getting lost in between rolls of fat, slowly sinking into jiggling love handles that only further comforted the crying man. K.aito knew he needed a hug and he had been told a few times in the past how comforting his hugs always felt. Still, he didn’t think S.huichi would go this far, he didn’t think he would hold onto him for this long. He didn’t think he would squeeze him like the giant teddy bear he secretly is. It felt good in a way… comforting but also… right. He blushes some more as he began to gently pat the back of his head, which was mostly buried in his massive chest by now. S.huichi can feel himself slowly calm down. The pain was still there, but this helped most certainly.

He did not want this hug to end. Deep down, neither did K.aito. As embarrassing as it may be to be holding onto him like this, a part of him did enjoy it. It wasn’t like K.aito to get so flustered like this, a part of him was not entirely sure why. There have been a few times in the past where he would get a bit shy about his weight, but he always kept that to himself. Still, S.huichi was making it out to be one of his finest features as it was crystal clear that it offered him comfort. K.aito liked that. He loved the way this felt and he loved the way it was making his friend feel. Relaxed and safe.

Eventually though, the hug did need to come to an end. “Alright, I think you need a short break from training.” He slowly pulled away from him, which was hard to do. S.huichi wanted to stay like this forever if he could but he did not want to make things awkward. He reluctantly lets go of K.aito, still sniffling slightly but no longer crying.

K.aito then allows his giant rump to rest onto the earth, his belly wobbles around like jelly from his movements, now looking bigger than ever as he sat down. S.huichi found himself staring at it, wanting to hold onto it some more. He truely was touch starved. K.aito patted at a spot next to him, signalling for S.huichi to sit down next to him. So, he did. “Look at all those stars out there.” K.aito says. S.huichi looked off into the horizon. The night sky looked stunning. “Ya know… I have this dream of going to space one day.” S.huichi peered over at K.aito, curious to hear him mention this. “I know I’m the ultimate sumo but sometimes I kinda wish I could be… an ultimate astronaut. Guess I did never go to space just yet though. Ah well, someday I’ll get there! Doesn’t mean I can’t be a sumo and an astronaut, right?” K.aito gave his belly a playful little slap, making it wobble around like a vast ocean of soft fat.

S.huichi blushes heavily as he found himself staring at it, which K.aito was oblivious to. Without knowing how he felt, K.aito wrapped a giant arm around S.huichi and pulled him closer. The detective squeaked shyly as he found his head smooshing right against the giant belly. He can hear it gurgle softly. K.aito looked down at S.huichi and blushes and smiles, he noticed just how big the size difference between them was. “Guess all this was a bit much for your first training, huh? My bad.” He smiled sheepishly and blushes a bit more as he squeezed at his belly with one hand.

S.huichi chuckled softly, which made the belly below his head wobble slightly. “I-it’s ok… but… why do you want me to train anyway? My need of getting stronger is more… of a mental thing.”

K.aito looked down at S.huichi again. “Your body and head are connected, right? If you work out then you should get stronger mentally.”

S.huichi chuckled once again, he loved the way K.aito’s belly felt as well. What he said made no sense but he decided to trust K.aito and his crazy logic. “K.aito… can you… help me get stronger?”

Hearing this made K.aito happy. It meant that S.huichi was not willing to give up just yet. That is what he wanted. Due to his excitement, he let out a mighty laugh, which made his belly wobble more and more. S.huichi blushes furiously as he felt it wobble beneath him like a soothing warmed up water bed. It truely was like jelly in every way, soft, jiggly and sweet. It was both adorable and… kind of hot. “So ya wanna be my sidekick, huh?” K.aito began to playfully ruffle S.huichi’s hair, who was a complete blushing wreck by now. “I gotta warn you though, I can be pretty strict.”

S.huichi blushes some more and nodded his head, he felt as though he may melt. Why was he getting this way all of a sudden? “T-that’s ok. I… I would like that a lot. To be your sidekick, I mean.”

K.aito grinned as he continued to pet him, S.huichi was caught in a state of pure bliss. Snuggled up to something so warm, soft and comforting while getting loving pets like a sweet little kitten. He didn’t realise how much he needed this soft touch. “Glad to hear it, sidekick! Now… we better get back to training. Gimmie 50 push-ups.”

Not expecting such a high number, S.huichi peered up at K.aito with large eyes. “50?!”

His new master simply gave him a cocky little smirk, showing off some sweet little dimples in those wonderfully chubby cheeks. “It’s either that or you take me down in a sumo match. Told ya I can be strict.”

It was a high order, but if he had to choose, the push-ups were definitely doable. S.huichi nodded his head as he slowly pulled away from K.aito’s comforting body. “O-ok.”

With that, the slender detective got to the ground and began to do some push ups, already whining and grunting a bit as he did. “Geez, man. It’s obvious you never work out.” K.aito says, he was amazed to see how he was already so tired.

Poor S.huichi huffed a bit as he glanced over at K.aito. “Mmmgh… y-you talk pretty big for someone who isn’t doing any.”

K.aito chuckled a bit and began to blush again, he rubbed a pudgy hand over his belly. “Oh, I’m way beyond push-ups now, sidekick.”

S.huichi had an idea to what he may mean, but he still did ask. “Huff…what’s that supposed to… ha… mean?”

K.aito gave his belly a playful little jiggle, as if to punctuate his sentence. “I can’t do push-ups anymore with this gut. Gets in the way.”

S.huichi blushes heavily as he imagined it, K.aito’s fat belly smooshed hard against the ground as he hopelessly tries to do a push-up, his thick arms nowhere near the ground as he squirms in the spot. The sudden image in his head got S.huichi all flustered and he collapsed under his arms. “Ah!”

“That’s only 20, not done yet.” K.aito says, he sat there and watched him, offering words of encouragement.

Eventually, S.huichi finally made it to 50. The poor boy panted like a dog in the middle of summer. So exhausted, he allowed himself to collapse to the ground, looking up at K.aito while sweating. K.aito offered him a proud smile as he gave him another little pet on the head. “You did good, sidekick.”

S.huichi smiled back at K.aito, he felt so safe around him. It was amazing how close they managed to get in just one night, then again he did get awfully close to K.aede despite only knowing her for a few days. “Thank you, K.aito.” He says in between breaths.