A singular girl was sitting around in the hot springs one day, her name was Riko Aida. She was relaxing in the hot springs while thinking about something, in her mind she knew a Basketball match was coming up with a rival school and she had to come up with a plan. As she was pondering someone else walking into the springs with her, shaking her head she looked at the newcomer with her eyes widening at the large breasts jiggling from the woman’s chest.
 “What’s up Flat Chest? Trying to relax and not think about how embarrassing it is to have such small boobs? Unlike you I don’t have to worry about that!” The girl laughed, Riko immediately knew this was Momoi. The girl’s chest was big, but her ego was far bigger. She crossed her arms and groaned.
 “No Momoi…. I’m thinking about other things, and it doesn’t bother me that my chest is flat…. I can always find a way to expand them out, and I will one day.” Riko said, hiding her thoughts about the basketball event. She knew Momoi would try to make her talk about her plans, Momoi laughed and jiggled her breasts in her hands.
 “Ha! Well maybe if you tell me how you feel about the basketball event I’ll tell you my secret, unless you like being unattractive Flat Chest!” Momoi laughed, Riko glared at her, quickly getting annoyed.
 “How about you shut it Momoi?! It’s not like you have the biggest boobs in the world!! I bet there are other girls that have breasts bigger than yours!!” Riko retaliated, her eyes twitching in anger as Momoi laughed even more.
 “Psh…. Yeah right!! I have the biggest breasts!! And even if there are bigger tits out there they will never trump my looks!!” said Momoi , Riko was getting quickly irritated and got up. Standing over the pink haired girl Riko stared down at her as an idea came to mind, to rig the competition and to solve her flat chest issue.
 “Ya know Momoi…. I think I have a good idea on what to do to get my chest bigger, and you’re going to help me!!” Riko said before she grabbed her by the shoulders.
 “Huh? What the-?!” Momoi said before Riko opened her mouth, the busty girl screamed before Riko shoved her head in between her jaws. Her cheeks puffed out as her mouth was full of Momoi’s head, Riko began licking and moaning as she tasted Momoi.
 “Mmmm…. She tastes like cotton candy…. Maybe a bit of bubble gum in there too….” Riko thought as she began swallowing, grabbing Momoi by the arms Riko began eating the busty girl. While she did want bigger breasts her mission was clear, rig the basketball event between their schools. Momoi wiggled about in Riko’s grasp, trying to free her arms while flailing her legs around.
 “You better let me out Flat Chest!! I won’t stand for this!! And if they notice I’m gone, they will disqualify you from your stupid team!!” Momoi yelled, although no one would hear her as her head began to go down Riko’s throat. Her screaming face bulged from inside as she was swallowed by Riko, the flat chested girl was enjoying the moment finally tired of being made fun of for her flat chest. She got over Momoi’s shoulders and began swallowing the girl’s chest and torso. She struggled fitting the melons into her mouth, but eventually she was able to fit them in and started licking them.
 “Mmmm….” Riko moaned, loving the flavor of Momoi filling her mouth. She continued gulping getting to the girls stomach region, the big breasts made bulges in her throat making her gag a bit but she fought through it and continued.
 *Gulp….Glrk….Glug….*
Riko’s belly began expanding out as Momoi’s head filled her stomach, her screaming face bulging out of her belly as Riko got to her ass. Riko had to open her mouth even further as she tried to get Momoi’s fat ass into her mouth, she breathed heavily out her nose as she tried to get it in. Grabbing the firm ass cheeks Riko pushed them into her mouth and felt tempted to chew on them, but she fought off the temptation and continued.
 *Gulp….Gulp….Glug….*
Riko’s throat bulged out severely as the fat ass went down her throat, slurping up Momoi’s legs. Riko closed her mouth over the girl's feet and gulped. Riko traced the rest down her throat with her finger, humming as the rest of Momoi joined the rest of her inside Riko’s stomach. The girl struggled inside her gut as air came up Riko’s throat, making her cheeks puff out.
 *BOOOOOOAAAAAAAARRRRRRRPPPPPPPPPP!!!!*
Riko belched out, sending spit flying from her mouth. Catching her breath from her large meal Riko sighed in relief as she rubbed her squirming belly, sitting back into the water Riko sighed again and laid back. “Struggle all you want Momoi! I told you, you were going to help me get bigger breasts! And this is how! But keep struggling either way, I like the way it feels!” She said before her face turned a bright red, it felt so good it was only right in her opinion to enhance the experience. Opening her legs she began rubbing her pussy as Momoi began digesting inside her, with her meal struggling and screaming followed along with the groaning of her gut made it really sexy to her.
 “Are you masturbating to my death?! You crazy bitch!! Let me out this instant!!” Momoi screamed, a puddle of stomach acid was already beginning to form, making her ass and feet burn.
 *Gurgle….Churn….Glorp….”
Riko panted heavily as she rubbed herself, her eyes rolling up as her tongue came out of her mouth. She moaned wishing she could grope herself, but the reminder of her flat chest came back. But she knew that fact would be false by the time Momoi was digested, but until that time came she just rubbed her squirming belly to substitute. “Yes you fat chested bitch!! Melt inside me!! My team will win the basketball event!! Especially now when you will be nothing more than fat swinging from my chest!!” Riko screamed, Momoi began punching and kicking with all her might trying to escape. But all it did was make more acid squirt on her, the acid rose over her thighs up to her stomach. Her legs and butt were numb from the acid rising over them.
 “Riko!! LET ME OUT!!!!” Momoi screeched, Riko burped out more air as her belly tightened even more making the acid rise higher. The acid rose over her shoulders making Momoi tilt her head up, with no air left Momoi quickly fell unconscious and sank below. The stomach groaned loudly as it settled and started digesting its meal more effectively, it began contracting as more of Momoi was churned into mush and bones. Riko moaned louder as the sound of sloshing meat and snapping bones filled her ears, the digested remains began pumping through her letting her body absorb the fats of Momoi.
 “Y-YES!!! ADD ONTO ME!!!” Riko yelled as she felt her boobs grow out, immediately grabbing onto the left one with her remaining hand. Groping her left tit she moaned before her ass grew out as well, she felt her body grow out fully before her colon filled up with the remains of Momoi. Her eyes widened before she stopped and got up, not being able to find a toilet she went over to a corner of the springs and squatted down. Squeezing her chubby belly she began shitting out brown logs full of pink hair and bones, she moaned before she continued masturbating. “O-Ohh…. It feels too good!...”
 *Plot….Frt….Plop….*
The turds began piling up into a stack, white bone fragments and pink hair being very clear out of all the brown. Riko began to masturbate faster as she continued shitting out Momoi’s remains before she felt a clog in her system, moaning and groaning she began pushing as hard as she could before she farted out a skull onto the pile. A few more logs came after it full of pink hair before it stopped, Riko screamed out as she finally came squirting the remains with her juices.
 “O-Oh god!... T-That felt amazing….” Riko whispered before she slowly got up and turned around, she waved the smell away from her nose as she looked at her work. “I think you look better this way Momoi, fat on me and shit on the floor…. Everyone knew you had a shitty personality, now it’s very obvious….” Riko then turned around and walked away, feeling her new additions bounce as she walked away. She knew she would need bigger clothes that moment onward, but then she found Momoi’s clothes and her house keys. Looking back at the pile of shit Riko smiled before she put on Momoi’s clothes and held the keys in her hand.
 “I’m sure she won’t mind if I borrow some of her outfits!...”