Doki Doki Inflation Club

“Perfect!” exclaimed Natsuki as she finished decorating the final cupcake. This one was a particularly special one baked especially for Yuri, piled high with dark blue frosting, and with blueberries and a special ingredient inside. Natsuki was tired of Yuri's short jokes and her audacity to say that manga isn't literature. She hoped this cupcake would teach her a lesson, but not kill her; she was still a friend, after all. For that reason, she baked the antidote into another cupcake that she boxed with the other two she made for their study meeting. Once she had everything packed, she grabbed her bag and the box of cupcakes and headed out the door.

For the entire walk, the only thing on Natsuki's mind was excitement for what was about to go down. When she finally arrived at Yuri's house, she took a deep breath before ringing the doorbell. After a few seconds, the door opened and she was greeted by the deep violet of Yuri's hair.

“Oh, good afternoon, Natsuki. You're right on time. Come in!” said Yuri, welcomingly. Natsuki stepped inside.

“Thanks for inviting me over. I brought cupcakes for later, of course,” Natsuki responded, struggling to hide an excited grin.

“Here. The cupcakes can go on the counter,” Yuri said. “Bring your bag up to my room and we'll get started.” The two girls receded upstairs and began studying.

After a few hours of reading and flash card practice, the girls finally decided to take a break.

“I think we've been going long enough” said Yuri. “Time for a break.”

“Are you hungry at all?” Natsuki asked, struggling to keep the devious excitement out of her voice. “The cupcakes are waiting.”

“I guess I am a little hungry. Let's go get those cupcakes,” Yuri replied. They rushed down to the kitchen where the box waited on the counter. Natsuki opened the box and presented the special cupcake to Yuri.

“I made this one especially for you,” Natsuki said in a faux proud voice. “You said you like blueberry, right?”

“Aw, thanks Natsuki,” Yuri said, accepting the cupcake. “I love blueberry.” Natsuki was practically shaking with excitement. Her plan was all coming together. She had to remind herself to breathe as she watched Yuri remove the wrapper and slowly raise the cupcake to her mouth. As she gently sank her teeth into it, Natsuki let a devious smile slip.

“How is it?” Natsuki asked Yuri as she swallowed the first bite.

“It's delicious!” responded Yuri. “I think this might be the best cupcake you've made yet. Thank you.” Natsuki took one of the remaining cupcakes as Yuri finished hers, careful to avoid the one with the antidote Yuri would need in a few minutes.

Once the two had finished their cupcakes, they began to walk back to Yuri's room.

“Thank you so much for the cup–” Yuri began to say, but was cut off by a sudden, strange feeling that overtook her. Her stomach began to feel tight. She placed her hand over it, and it let out a small growl. Yuri moaned uncomfortably.

“Natsuki, what was in that cupcake?” She asked, concerned.

“Oh, nothing out of the ordinary, except something a little special,” she replied. She noticed something strange on Yuri's face. A small patch of skin on her nose had turned deep blue. “Hey, you might want to look in the mirror,” she added. Yuri rushed to the mirror in the hallway and investigated her face closely. She noticed the patch of blue skin that was now beginning to spread. She began to panic.

“What is happening?” Yuri said, flustered. “Am I having an allergic reaction?” Her tummy let off another growl, this one louder. She lifted her shirt slightly, revealing another, larger patch of blue on her stomach, that was also spreading. She noticed a cold sensation deep in her stomach, almost like Ike it was filling with juice. As the blue continued to spread over her skin, Natsuki simply stared in amazement and satisfaction. Yuri's skin was almost completely blue now, and Natsuki noticed that her stomach seemed larger.

“Natsuki, what did you do to me?” Yuri asked, her voice shaky and nervous. Her belly was now definitely larger.

“This is for your constant disrespect to the art form that is manga,” Natsuki said assertively. “And all your jokes about my height too.” Yuri looked at Natsuki, her eyes full of fear. Her stomach let off one final, deep, loud groan, and then it began.

The juice in Yuri's belly rumbled and pressed against her stomach walls, pushing them outwards. From Natsuki's​ view, Yuri's belly began to bulge forward as Yuri whimpered in fear and discomfort. She felt the juice spread to other parts of her body, and her rear began to swell slightly as well. As her belly grew larger, her sweater rode up her torso. The juice now flowed to her thighs, and they too started swelling. Natsuki was beginning to feel very turned on at the sight of Yuri swelling with juices. She slowly slid her hand into her panties and began rubbing, overwhelmed with arousal. She had always found Yuri rather hot, and her current situation only magnified that. Yuri stared at Natsuki in disbelief that her friend was now pleasuring herself to this.

“Natsuki! What are you doing?!” She yelled, her voice muffled by swollen lips. Her thighs, belly and rear had now joined into a single sphere. A deep rumble sounded out from inside her, and the whole mass of her swollen body began to expand, tearing her clothes. Natsuki grew wetter with each gurgle and groan from Yuri's juicy insides. Her panties were soaked now. As the round, blue mass that was Yuri's body continued to grow, Natsuki edged closer and closer to bliss. Suddenly, a massive groan rang out from the depths of Yuri's tummy and reverberated through the entire house, accompanied by the intense moans of Natsuki's orgasm. Yuri's arms and legs had now receded entirely into her spherical body, and she was now panicking.

“Natsuki! Help!” she screamed at the slightly dazed Natsuki watching her. Natsuki snapped out of the bliss she had entered and confronted Yuri.

“So you want help?” She said condescendingly. Yuri shook her head slightly.

“This cupcake will fix you. But first, repeat after me: manga is literature!” said Natsuki sternly.

“Manga, mmnph” Yuri began to say to the best of her ability. “Is literature.”

“Good. Now,” said Natsuki, waving the antidote cupcake in front of Yuri's violet face. “Promise me you won't joke about my height again.

“Ok I promise I won't!” Yuri yelled over the sound of her skin stretching. “Now give me that before I pop!” Natsuki then stuffed a piece of the cupcake into Yuri's mouth. Yuri eagerly chewed and swallowed it. As Natsuki stepped back, the sounds from inside Yuri stopped, and her expansion halted.

“Oh god. Is it ov–” Yuri began to say, but was cut off once again by vibrating sensation from deep within her. With a loud, heaving grumble, her expansion began again, even faster this time. She felt her skin stretching to the limit. She let out a muffled whine, and then,

BANG!

Blueberry juice coated the walls, ceiling and floor. Natsuki screamed as the spray covered her in the gooey, juicy contents of Yuri's guts. In the center of the blast was Yuri, naked and surrounded by juice soaked scraps of clothes, but alive and intact. Natsuki quickly helped her up and got her a towel to cover up with.

“Are you ok?” She asked.

“I think I'm alright.” Yuri replied, breathing heavily. “I learned my lesson, as well as something else.”

“And what's that?” Natsuki asked confused.

“Never eat your cupcakes again.”