Asundertale 0.1

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<<set $undyneBursted to 0>> <<set $sexPrompt to 0>> The following is a work of fan-created fiction. It contains sexual, fetishistic content. It is not intended for viewing by persons under the age of 18. Should you choose to continue and you are not of age to view pornographic content, the author disclaims all responsibility for the consequences. Asundertale is licensed by Creative Commons Attribution-Non Commercial-Share Alike. Characters in Asundertale are the intellectual property of Toby Fox, and are used by the Author (Tidus Ramidros) with permission. By playing Asundertale you are entitled to certain rights and bound by their respective responsibilities. Under Creative Commons Attribution-Non Commercial-Share Alike, the player may download, modify and redistribute the source code of Asundertale under the same terms as this license. The player may NOT claim Asundertale as their work, and MUST credit the Author in all redistributions, modified or not. The player must NOT sell any redistributions of Asundertale, modified or not. The player MUST disclaim the rights to the characters belonging to Toby Fox. <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/"><img alt="Creative Commons License" style="border-width:0" src="https://i.creativecommons.org/l/by-nc-sa/4.0/88x31.png" /></a> Asundertale by Tidus Ramidros is licensed under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-sa/4.0/">Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License</a>. Click [[here|start]] if you agree to these terms.

Welcome to Asundertale, the interactive inflation-centred adventure based on a crack AU by myself and a friend, based on a tag created by vaporiousviewer on Tumblr for Undertale bursting-related content. Let me start this off with, this is a legitimate thing I'm doing unironically, no it's not some Sonic Inflation Adventure knockoff, it's a kink fic. It is centred around body inflation, and features optional bursting. Close out of this tab if you are disinterested in these things. Otherwise, [[click|choice]] to start.

You awake, sitting up on your bed and yawning loudly. You check your phone for the time and date. It doesn't seem you have much to do today, so you decide to just take it easy. You leave bed, and dress in a simple shirt and pants before going through the normal routine and sit at your computer, to load up MonsterNet. About an hour passes, and your phone starts to ring. Intrigued, you walk over to find that you missed the call. You decide that you might as well call someone to fill the time There's something you've been meaning to try with a special someone... (Who do you call?) [[Toriel.(UNDER CONSTRUCTION |torielstart]] [[Sans. (UNDER CONSTRUCTION)|sansstart]] [[Undyne. (PLAYABLE)|undynestart]] [[Mettaton. (UNDER CONSTRUCTION|mttstart]] [[Someone you've never heard of. (UNDER CONSTRUCTION)|gasterstart]]

Double-click this passage to edit it.

<<if $undyneBursted is 0>> "Hey, kid, can I tell you a secret?" You hadn't even said hello and Undyne had started talking. "...Sure?" you reply. "I drank soda last night." If this were anyone else, it wouldn't be news at all. But Undyne refused to touch any sort of sugary drink because of her athleticism. Since the disbanding of the Royal Guard, however, there must have been less to fill up the time between training. "And I feel like I may have judged it a little bit harshly? It's actually really good." You nod, although she couldn't exactly have known over the phone. "But the thing is, I only had that bottle. So I was going to go out and get more, but then decided, hey, my buddy might have some! So I was wondering if I could come over, drink, and just hang out for a bit?" You tell her you were thinking the exact same thing. "Great! I'll be over soon!" [[You get to cleaning up the apartment in preparation.|UD1]] <<elseif $undyneBursted is 1>> You cannot call Undyne. [[OK|hub]] <<endif>>

Double-click this passage to edit it.

After tidying up, taking out the trash, the usual, you notice the nozzle of a foot-operated air pump sticking out of the door of your hall closet. You take it out and wrap it up, setting it beside your bed. If the night goes as planned, you'll need it. As you do so, the door knocks. Your guest has arrived. You open the door to find the tall, lanky fish dressed in rather casual attire. A tank top with some anime logo and a pair of jeans, scuffed at the knee to look worn. You can't tell if that was there when she got them or if she legitimately wore them down. The latter was more likely. "So, where's the goods?" You point to the fridge and tell her to help herself. She does exactly that, being courteous enough to grab two bottles of the Asian brand that Alphys usually carries. You both sit down on the small, yet comfortable, sofa in the living area. "So why didn't you go to Alphys?," you ask. "Ah. She's out on business. Much busier since the whole 'liberation of the monsters' deal." Undyne twists the cap off her bottle in one smooth move. You nod. Many of the monsters had been very occupied since the Dreemurrs and their new adoptive child saved them, but Undyne was more or less... displaced. You kinda felt for her. "So. What are we watching?" Undyne asks, gesturing to the television. You shrug, and reach for the remote, deciding to watch whatever was on. Whatever was on, apparently, Undyne was a fan of. You couldn't read the Japanese title, but Undyne was howling. "Aw, MAN, I LOVE THIS SHOW!" She turns to you, with sparkles in her eyes that you'd expect out of Alphys, as she begins to go over the main plot and characters of the animated serial[[...|UD2]]

Next thing you knew, you had marathoned a whole season of the show, it was dark outside, and you were down to your last case of soda. Both of your stomachs had grown slightly, but not significantly. Undyne yawned, and you rested a hand on her shoulder. "You wanna just crash here tonight? Your place is a bit far." She nodded. "Alright, I'll go get the air mattress." As you arrive with the mattress and the air pump from earlier, Undyne comments on her state. "Y'know, all this soda in me is kinda nice. I like how the bubbles pop inside you, it's like... a thousand tiny explosions!" "You don't look too bad, either," you reply, pressing on her lightly distended belly. She blushed and pushed away your hand. "Oh, stop, I know I overdid it..." "No, no, I meant it. I like the look on you." "Oh. Well... then." Undyne's ears flipped back, and she chuckled. "I woud be lying if I didn't say the same about you. I've always been this beanpole, unable to gather either body fat or muscle. I got stronger, but not... bigger, you know? I guess it's part of being a monster. Kinda stuck with what I have. But it'd be nice to try something different for once." [[You nod.|UDnod]] [[You gesture to the pump.|UDpump]]

You nod sympathetically, and finish inflating the air mattress. "Well, there you are." Undyne smiles. "Thanks. I'm glad I came over today, it was fun hanging out with you." You smile back. "Always good to have you, Undyne." You head to bed. When you awake, Undyne has left. You go about your daily schedule, content, but with this sinking feeling that you forgot about something. [[BAD END 1 - Slip of the Mind|badend1]]

"Well... it might be a bit unconventional..." You quickly finish pumping the mattress. "But I might be able to offer a temporary to solution to your ailment." You sit back on the couch beside her, lifting the nozzle of the pump into her view. Undyne looks at your expression, then to the pump, then back to you, cycling for a few moments as she pieces together your intentions, with her face in a puzzled snarl. "Ohhhh. Oh." Undyne breathed revelation, then went back to being puzzled. "You mean... use the..." She points at the nozzle in your hand. You nod. "That's... a new one, kid. Gimme a moment." She stands up and walks to the bathroom, closing the door behind you. A minute passes. Then two. Then five. [[You continue to wait.|UDwait]] [[You decide to check up on her.|UDcheck]]

You have reached a bad ending. You have the choice to turn back the clock to the decision that triggered the ending, or start fresh. [[Turn back time.|UD2]] [[Start over.|hub]]

Ten minutes pass. Twenty. Forty. Then a full hour. Eventually, Undyne emerges from the bathroom, without her tanktop on, showing off a flat, smooth blue torso. Her chest, being aquatic, was without breasts or nipples, but rather her entire torso was molded delicately into a stunning underbelly. The blue faded into a lighter shade at the center of her abdomen, slightly pushed out from the soda binge you had just embarked on. She had tied back her long, red hair, letting it fall over one arm, much akin to a top fin. She was quite a sight to see, a sort of unique beauty you never thought existed. She stood in the hallway, almost radiating light, holding one arm behind her back. Undyne smiled warmly. "I'll do it." "I'm glad. C'mon, it'll be fun." You pat the air mattress as you move down to it. Undyne walks down the hallway, and kneels on the mattress. "I won't lie, this whole thing... it seems like a very intimate thing to do. So I have to ask. And no dodging the question!" Undyne leans in closely, locking eyes with you. "Are you... attracted to me?" What say you? [[Yes|UDyes]] [[No|UDno]]

You walk to the door, to find Undyne talking to herself. "Did they know I was into that?? How? Did I make it obvious? How would I even respond..." As you put your ear to the door, you slip and smack your head clean against it and fall to the floor. Undyne yelps. "Are you oka--" Undyne opens the door to find you on the ground directly outside. Cue the awkward silence of the century. Undyne breaks it. "I have to go," she says. She gathers her stuff, and leaves. The next morning, you recieve a text from Undyne. "I'm sorry for leaving like that. I know I was in there a while and you just wanted to make sure I was alright. I thought about your offer more at home, and I'm just not sure I'm ready. It seems like such an... intimate thing, and I'm not sure I'm there with you yet." You close the text app on your phone, and go about your morning routine, knowing that whether or not she'll say it, you've damaged your relationship with her. [[BAD END 2 - Peeping Tom|badend2]]

You have reached a bad ending. You have the choice to turn back the clock to the decision that triggered the ending, or start fresh. [[Turn back time.|UDpump]] [[Start over.|hub]]

You close your eyes, and inhale deeply. With the breath, you lock eyes with her again, and say: "Yeah. I am. You're... just... beautiful. And I always have fun being around you. I wasn't sure how to tell you. So I guess I'm glad you forced it out of me." Undyne's grin widens, showing off rows of saw-like teeth. She leaps on you, throwing her slim arms around you. You slowly slid the hose down the waistband of Undyne's jeans, plugging the nozzle in behind her. In response, Undyne emitted a small, mouth-barely-open moan. "Is that alright?" you ask her. "Perfect," she replies. She lets go of you, and lays on her back, her weight not enough to crush the tube. You stand, [[and place your foot atop the bellows of the pump.|UDpumpone]]

You say no. "Undyne, you're great, but I just think of you as a friend." Undyne's smile turns into a grimace. "Then... what is this all about?" You freeze. You hadn't thought about that. Undyne leans back, then laughs. "You're a piece of work, you know that? Hilarious." She turns around, and puts her head in her hands. "You know I would have gone all the way with this, right? I got myself all ready, started getting pumped about it, then... you don't even know why? You know this is all I've wanted to be able to do with a significant other?" Guilt sets in. You rub your shoulder. "I'm going to leave. Contact me when you have everything straight in that head of yours." Undyne retrieves her top and leaves. You flop onto the mattress. What a failure this all was. While the two of you eventually start talking again, after a long time coming, you wonder what would have happened had you just thought that plan out a little more. [[BAD END 3 - Heartbreaker|badend3]]

You have reached a bad ending. You have the choice to turn back the clock to the decision that triggered the ending, or start fresh. [[Turn back time.|UDwait]] [[Start over.|hub]]

Undyne breathes, supporting her upper half with her hands. "Any time you're ready." You slowly step down, forcing a rush of air into Undyne's body. She shivers. "Damn, that's... a weird feeling." "Do you want me to stop?" Undyne beams in your direction. "Hell no." In response, you deliver another pump, this time faster. "Oof..." You pump again, and begin to pick up a slow, steady rhythm. Undyne puts a webbed hand to her stomach, as it slowly starts to push out and grow bigger. "How does it feel?" you ask, although she appears quite pleased. "Strange... but not in a bad way. I'll be honest with you, despite having fantasized about it before, this is the last way I expected the night to go." You simply chuckle, and move down to the mattress with Undyne, rubbing her swelling tum as you work the pump. Every now and again she'll let out a moan or grunt from the building pressure, but is usually pretty quiet. Eventually her stomach has grown to simulate a late pregnancy, and Undyne is breathing heavily with each pump. Do you stop now? [[Yes.|UDstop1]] [[No.|UDpumptwo]]

You decide that it's enough, and remove the hose from Undyne. You lay her down completely, and straddle her swollen belly, rubbing it to try and ease the pressure. "How are you holding up?" "I'm fine, just... it's pretty tight." You smile, and continue to massage her blue skin. The two of you fall asleep like that, and when you wake, she has deflated completely. You awake simultaneously, and scramble off of each other, as if you didn't recall the events of last night. As it comes back to the two of you, you smile, then blush, then start laughing in a giant heap. She goes home that day satisfied. You're also feeling pretty good about your relationship with Undyne. [[Neutral End 1 - A Start|neutralend1]]

You decide Undyne can take more. You begin to pump harder and faster, emptying more and more air into the fish's body. "Oh my god, this is... really tight..." You feel her body expand, her thin flesh slowly growing translucent. The air begins to creep up her body, turning her entire torso into a giant balloon, now about as large as Undyne was wide. Her jeans were being pushed off of her body, restricting her. "I feel... huge... I'm gonna..." Undyne is huffing out every word. Do you continue? [[Yes.(!)|UDpumpthree]] [[Yes, but remove her pants first.|UDpants]] [[No.|UDstop2]]

You have reached a neutral ending!! While your relationship with your partner has strengthened, you may have been able to do more to satisfy them. From here you can [[return to the start|hub]] or [[restart the date.|UD1]]

<<set $undyneBursted to 1>> You ignore Undyne, and continue to pump. Undyne suddenly begins screaming, the button on her jeans holding back her stomach from growing any farther down. The pressure builds around her midsection as you continue to pump. Undyne cries out for you to stop, but too late. The air around the top of her ballooned form had stretched too far, causing her magical form to lose stability. [[With a loud explosion, she bursts into dust, which coats the room.|burstending1]]

The translucency of Undyne's skin worries you. You remove the hose from her. You straddle her swollen belly, rubbing it to try and ease the pressure. "How are you holding up?" "I'm fine, just... it's pretty tight." You smile, and continue to massage her blue skin. The two of you fall asleep like that, and when you wake, she has deflated completely. You awake simultaneously, and scramble off of each other, as if you didn't recall the events of last night. As it comes back to the two of you, you smile, then blush, then start laughing in a giant heap. She goes home that day satisfied. You're also feeling pretty good about your relationship with Undyne. [[Neutral End 1 - A Start|neutralend1]]

You hear Undyne's complaints, and reach for the button on her pants. The pressure equalizes, throwing down the zipper at lightning speed. "You okay over there??" Undyne nods. "Much better, thanks." She presses gently into her bloated body. You sigh in relief, and begin pumping again. Slowly but surely, Undyne's jeans begin to slide off, revealing a pair of slender legs and black cotton underwear. Her stomach then started to lift and stretch the undergarment. The small scrap of cloth stood no chance, and tore right off of Undyne's body. Undyne starts to moan loudly, her full body now exposed to open air. Each pump begins to fill her with as much lust as air. "You wanna..., give a girl a hand here?" She crosses her legs, and with her swollen body in comparison to them, it looks quite humorous. [[Continue pumping.(!)|UDpumpfour]] [[Pleasure her.|goodendprompt]]

Your actions have lead to the death of your partner. From this, there is no recovery. [[Mourn.|death]]

You black out. A figure appears in your dream. He speaks: ṫ᷿́͗̍᷃͠h̖̤̗̭̟̫͢ǐ̧̯̻̜᷃̍ŝ̨̗͎͋ͩ̏ ḯ̗̖̉᷄ͦͅs̴̜᷊ͮ͐͑ͦ y̭̪̟ͨ̐ͤ̕o̞͇̣̟ͦͮ̓ư̲͋͒͝͏ͪr̵̡̻̗̦̃̿ f͖᷿᷀̆̒͊͝a̴̧̙̗̜̔͠ū̷̮̲̬̓ͅḻ͓͇̲̌᷄͆t͈̦̣̮͊̐͗.̴᷂̲ͩ᷉̕ͅ y̜̘̋ͬ̇̋̅ơ͙̋̆᷉̋̽u̡̢͕͈ͮ̋̋r̴̖̲̤̋ͯ̋ p̮͊̋̏͗̋͘l͔̀̋ͪ᷈̋͛ȩ͍̉̋᷁̋̕a͍᷀̋̅̌̋̔s̮̤̱̋͂̋᷁ȕ̝̋᷅̋̅͠r͖̭͚̿̋̋́e᷿͉̠̋̑̋ͮ d̷̲̬̪̋̈́̋ọ̖̋̄͂̋ͩẹ̦̋̔̓̋͢s̞̈̋̎̾͌̋ n̞̗͎̊̋̋͑ô̠͕̋ͬ̋̑t̡̋̽᷆̋͞͝ dͤ̋́͐̋͗͠e̹̫̋͊͌̋ͧc̡̖͈̋ͨ̋ͬḯ̗̋͐ͣ᷀̋d̦̲͙̋᷄̋ͅë͎̱͇̲̋̋ t᷿̿̋̍ͮͤ̋ḫ̷᷊̋̋̊̚ę̞̋̋͊͝͡ f͎̋͏̷͏͓̋a͓̦͒̋͛̋ͭt̶̘̩̫̋̄̋e͏᷊̩̋᷃̋̆ ő̡̳̯̋̂͢f̢̹̋̑᷇̋᷅ ą̭̆̋ͫ̋᷆n͎͕̖ͯ̋̃̋ő̝͚̣̋͑ͅt͛̋᷉̌ͤ̋̕h̠̺᷂̋̋ͦ̚e̋᷉̓̋̎̕͟r̠᷅̋͏̄̋͌ You can only nod your head in agreement. [[Wake up.|hub]]

<<set $undyneBursted to 1>> You decdide to pump a little while longer, despite the groans and creaks of protest from Undyne's body. "This is, uhm... getting a bit ti-AAGH!" Undyne shrieks in pain, and upon inspection, you notice a small tear in her form. You panic. You reach out, try to cover the leak with a hand, but it's already too late. [[The tear rips across Undyne's body and she explodes into dust.|burstending1]]

<<if $sexPrompt is 1>> The next portion of this route contains sexually explicit content. You requested to be given the option to skip this part. [[Skip this section.|goodend2]] [[Continue with this section.|goodend1]] <<elseif $sexPrompt is 0>> [["Well, if you say so..."|goodend1]] <<endif>>

You set Undyne back down, climbing on top of her drum-tight tummy. You dangle your legs of off each side, holding her around the chest area, looking her in the eyes. "You know how to please, I... *huff* I'll give you that." You shoot her a bright smile. "So how long do you reckon I'll stay like this?" asks Undyne. "Probably until morning," you reply. "Guess I *have* to stay the night now," says Undyne, feigned disappointment soaking her voice. You grin. "I guess you do." [[continue|goodend3]]

This game contains sexually explicit content. The developer has opted to allow players the choice to skip the sex scenes in the game. Would you like to be prompted to skip sex scenes? [[Yes, please!.|choiceyes]] [[I'll be okay, thank you|hub]]

<<set $sexPrompt to 1>> We will prompt you when a sex scene is about to occur so you may skip it. This choice will remain yours when the time comes. [[Sweet, thanks!|hub]]

((A/N I'M SORRY IF THIS IS TERRIBLE)) You shove over, placing yourself between Undyne's legs, gently wiggling a finger into her. She gasps, the air in her body increasing her sensitivity greatly. You jerk out your finger in surprise. "Nononono, it's good, I just didn't expect it to feel *that* good." You smile, and proceed to shove two fingers palm-deep between Undyne's lips. She almost explodes with ecstasy. "Hhhhhholy shit..." Undyne's toes curl, and her legs lift. You add another finger slowly, then gently massage the walls of her vagina. You move the top finger to gently stroke her clit. Undyne reaches down to touch you, but fails around her inflated ball of a torso. "God, please don't stop." But stop you do. You lift Undyne's legs by the knee, and gently lick the surface of her entrance. Lost in pleasure, Undyne begins to cry out loudly as you start sucking her out. In moments, she's reached her brink, and climaxes in a flash of light. [[Lay atop her.|goodend2]]

When you wake up the next morning, Undyne had almost completely deflated. All that remained of the events of the previous night on her was a few red stretch marks that complemented her natural markings, and a slight bump on her tummy, not much larger than after the soda the last night. You wake up before Undyne, climbing off of the mattress gently. You grab a blanket from your room, and throw it on top of her. You then move to the kitchen to prepare something for breakfast. You reflect on the previous night. What was supposed to be a fun experiment, had turned into friendship blossoming into love. Crazy how that happens. You opt for eggs and toast. The sound of the pan woke Undyne, the fish throwing her blanket to the opposite wall. She soundlessly entered the kitchen, taking her seat. Silence, save the sound of frying eggs and boiling tea water. After a good minute, Undyne got right to the point. "So. What a night, huh?" "Yeah." More silence. "Y'know, you might want to know the real reason I wanted to come over last night." "If there's more to tell, Ill hear it. Eggs are done, by the way." You scoop some eggs onto a plate for the both of you, collecting the toast as it pops up. "You sure this is okay for me to eat?," asks Undyne. "Eh, you won't die. It'll just take a bit to digest." You sit down on the small table, opposite Undyne. "So. What is it that you wanted to tell me?" Undyne looked down. "Well, you know I'm with Alphys." You nod. "I do." In reality, it had just occurred to you, and you almost bluescreen. "I've been into you for quite a while. And just recently, I got her permission to extend our relationship to you." The thought eases the surprise. If Alphys was okay with it, so were you. "I'm glad you accepted. Since Alphys has been busy all the time, you're the only one who's been able to get me out of the house. There's just been nothing to do. Not enough to keep me entertained. Slowly, I just started... wanting to be around you more. If you had declined, I... I don't know what I would have done." You reach out to put a hand on Undyne's shoulder. "You'd have gotten through it, just like you always do. You're Undyne. You're tougher than heartbreak." Undyne smiles again with that toothy grin. "You're right! Thanks. Boredom just... gets to you, man." You nod. "Hey, your food's getting cold." She snaps back to reality, and starts eating. The table was quiet for the rest of the meal. Afterwards, you helped Undyne retrieve her shirt from the bathroom, and send her off with the last case of soda. "Well, there you are." Undyne smiles. "Thanks. I'm glad I came over last night. It was fun hanging out with you." You smile back. "Always good to have you, Undyne." She turns to leave, but hesitates. Whipping back around, she takes you in a tight embrace and kisses you deeply on the lips. "Well, see you around," says Undyne, breaking the kiss. "Sounds good." With that, Undyne closes the door behind her, leaving you to your daily routine. [[Good End (Undyne)|UDgoodend]]

Congratulations on finishing Undyne's route! You feel as if Undyne left that morning with a spring in her step that was missing when she came in the previous night. From here, you can quit, or [[start another route.|hub]]