Undertale: The Regression Spell

[Strawberry Surprise]

Napsta frowned lightly when he was put down but soon smiled once more when Swap stroked his head, accepting being sat in front of her instead. At least this way, he was closer to the board and had a front row seat to what was happening. The carpet was really soft and comfortable too.

He sucked on his fingers and made happy gurgles as he eyed all the different candy illustrations, his imagination stirring, waiting for Swap to take a card for their turn. He hoped that he could have candy after dinner, too! If it was gummy candy or some kind of soft thing, that is. He didn’t wanna choke to death on a hard candy. That would turn him back into a ghost and he didn’t wanna.

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Frisk was glad the game finally started, eager to get things moving. Eyes alight, she placed her hands on her knees and leaned forwards a tad as she watched Swap reach for the game cards and then freeze, making her wonder what was wrong. She was a little confused as to why she stopped herself from grabbing a card and tilted her head slightly as she watched her.

“Swap?”

Frisk asked innocently and blinked, wondering what was going on.

“Chu fowget how to play? We tan help. Oh… Does youw tummy huwt ow somefing?” she asked, since a look of discomfort appeared on Swap’s face.

“Buh we jus’ stawted…” Frisk complained with a slight whine, even though she knew it couldn’t be helped if Swap needed to take a potty break. After all, she wasn’t under the effects of the regression spell like most people in the room. Things like having to wait were much harder for the usually patient Frisk these days though.

She was surprised when Swap stammered out that she couldn’t take a card. “Huh? Why not? Is somefing wong?” the kind girl questioned, starting to look concerned for her friend. “If chu wanna wun to da potty, we tan wait”.

Then she heard a trumpeting of gas from Swap’s lightly padded rear. “Ohhh” she said, putting two and two together, watching Swap grip the edge of the coffee table beside their play area on the floor, seeing how white her knuckles were as she gripped it so hard.

“It’s potty time!” Frisk realised. “Chu gotta potty!”

She waved the air a bit as the smell of the toot wafted around the room, trying to ignore it so as not to embarrass Swap. She then saw Swap’s eyes widen as she gasped out loud and her own eyes went wide. Uh oh! She knew that look. Swap was about to have an accident! And it looked like it was too late for her to make it to the bathroom at all. She seemed in too much pain and discomfort.

Sure enough, the soft crackling and then rumbling, squelching sounds of Swap filling her diaper helplessly could be heard.


“Uh…oh…” Frisk voiced. Then she saw how upset and humiliated Swap was. She immediately felt bad for her, recalling how horrible she had felt when her body first made her mess.

“Swappy hadda accident…!” she said but not in a teasing or mocking way, she sounded sad and sympathetic.

Frisk crawled over to the poor girl and put her arms around her, giving her a side on hug.

“It’s otay…it’s otay…no need ta be ‘bawwassed, otay? Both me’s an’ Chawa hab pooped ouw pants since we gotted hit by da wegwession spell. I know it feels weally bad. Buh ish gonna be otay,” she said to her, withdrawing her arms and sitting back a bit before gently rubbing Swap’s back.

“Don’t wowwy. Sans is hewe to help. He’ll help chu ged changies an aw clean. Buh…dis means…chu pwobably gots infected by da spell too. 'Cause chu came to ouw ‘vewse. I’m so sowwy, Swappy,” she said, patting her head, her fingers carding through her hair kindly.

“Ish otay to cry. Shhh, shhhh, we get chu aw cleaned up. My mommy and daddy will have ta tell youw mommy an’ daddy dat da spell gots ya…”.

The odour that was slowly filling the living room was unpleasant and all too familiar, reminding Frisk of her own accidents earlier in the day.

“It happened to me while’s we was pwaying Legos,” she informed Swap, leaning behind her to take a look at her Pull Up. “Yup, I messed my Pull Up, jus’ like dat,” she confirmed. “I fink ya gonna hab ta weaw diapees aftew dis…”

Frisk then pulled up her small skirt and showed Swap her wet but not yet soggy diaper, even though it made her face blaze in embarrassment in front of Sans.

“Look, look, ish otay, see? I weaws dem too. And Chawa! We’s both in diapees now, so chu dun gotta feel bad about bein’ da only one. We pooped too! We all in da same boat,” she said, trying to comfort her friend. "Ish not your fawt. Ish aw da spell's fawt!"

She then looked at Sans for help.

“Sans…Swappy needs changies. Tan chu help hew? Dewe’s diapees in Azzy’s woom. And... I fink, maybe somewhewe’s else, as well...,” she said, raising a finger to scratch her cheek as her gaze shifted to the side, hoping that she didn’t clue Chara in that their room was now a nursery full of baby things and LOTS of diapers.

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Seeing how upset Swap had become from her accident, Napstabot turned around and crawled and shuffled his little self over to her other side, putting his tiny arms around her waist and upper torso in a small hug, pressing the side of his cheek to her and nuzzling her side. His eyes were big and watery with sympathy for her.

“Ba…buuu!” he babbled loudly in a tone that sounded soothing and encouraging.

“Saaa!” he tried to say her name, looking up at her before rubbing and patting her back with jerky motions of his arm that was around her. He then rubbed and patted her chest too, wanting to help her feel better. He didn’t like it when such a nice girl was feeling bad. “Baa! Saaa!”

He leaned in and hugged her again more firmly, squeezing his eyes tight as he put all his love and care into it. "Saaa! Nooo....cwyyyy" the boy managed to get out. "No...cw-cw-cwy!"