Ruka who has now busted into Kazuya's residence sat on the floor looking down very sad. She caught Mizuhara and Kazuya in the room together, they weren't doing anything but Ruka still felt betrayed by the boy she loves.
 "Ruka we were just talking calm down" said Kazuya trying to defuse the situation but it wasn't working
 Ruka had tears streaming down her eyes and Mizuhara felt bad. She knew Ruka was deeply in love but still went to Kazuya's apartment.
 "Kazuya let me talk to her, I'll take her outside for some girl talk" said Mizuhara
 Kazuya mouthed thank you to her and Mizuhara went up to Ruka who sat on her knees. She stuck a hand out and smiled at Ruka. Ruka sniffled and took the hand which then led to Mizuhara taking Ruka outside the apartment. They walked a little ways and found a nice secluded spot to sit down and talk.
 "Ruka...I'm sorry I knew you were in love with him and still just went to him for troubles...forgive me" said Mizuhara
 Ruka looked at her and wasn't sure what to say but she didn't think she could forgive her yet. Ruka had only one thing in mind and that was if Mizuhara was gone then the gate to Kazuya's heart would be opened right for her. Ruka held onto Mizuhara's shoulders and Mizuhara looked up to see Ruka smiling. She smiled back but then it disappeared when Ruka's maw opened up in front of her. Ruka descended onto Mizuhara wrapping her lips around the top of her head and sucked on it for a second. Mizuhara was baffled at what was happening and as her senses came back Ruka had already engulfed and swallowed her head. Ruka pinned Mizuhara's arms and now her screams would be silenced by the inside of her throat. Ruka went through with her plan and kept swallowing.
*gulp...glrk*
Her lips stretched over Mizuhara's shoulders and Ruka kept lowering her hands aiding her quest to swallow this girl. Saliva ran down Mizuhara's shirt getting all over tits as Ruka made her way down her chest. Ruka reached the breasts and pushed the sex mounds down a little so she could get them in her mouth. The melons made her look like a chipmunk but a few easy gulps made the large tits stretch her throat and then disappear behind her own chest. Mizuhara screamed and cried out for Ruka to stop. The stench of her stomach getting closer and closer as the slick tight walls of Ruka's gullet pulled her down further and further. Her breasts squished down into the tight tube making it a little harder to breathe. Ruka gulped Mizuhara's midsection and reached her hips. The last half of Mizuhara hung out of Ruka's mouth and her legs moved a little bit. Ruka's belly expanded a little with Mizuhara making contact with the stomach.
*gulp...gulp*
Ruka felt the jiggly ass Mizuhara has slide against the roof of her mouth. Ruka swallowed a little and made it so she could put her tongue into Mizuhara's skirt and through her panties. She lapped her tongue over the fat juicy ass before sending it down further. Mizuhara started to curl up within Ruka and so she started to push the stomach walls out. The thighs were gone and only a little bit remained. Ruka took Mizuhara's sandals off and tossed them to the side. The feet came together as Ruka slowly closed her mouth with only Mizuhara's toes sticking out. Ruka pushed them in and swallowed. With her back against the bench Ruka felt satisfied with the bulging gut of a homewrecker. Ruka gave it a couple of soft pats.
 "Now you are just my food...with you out of the way Kazuya will be mine" said Ruka
 Her gut moved around and imprints of the struggling girl inside made themselves known. Satisfied Ruka stood up and walked with her belly moving. She had her hands under it and lifted it a little to relieve her back a bit.
*bwarrrpp*
Ruka belched on her way back and just smiled. She hummed a happy tune all the way home as her belly sloshed acids around with each step. Ruka went into her home and went upstairs not wanting her parents to see her huge gut full of girl meat. Ruka shut the door and locked it, basically sealing Mizuhara's fate. No one will see her within Ruka's belly now. The sun had really been shining so Ruka was a little sweaty and her belly shined with sweat bouncing off at places Mizuhara pushed at. Ruka removed her white sweater and pulled her skirt off and then removed her bra staying only in panties. Her sweaty big tits rested on her belly and finally Ruka sat on her bed. It was pretty hard carrying such a large meal round so Ruka felt exhausted.
*glorp...sizzle..glop*
Her stomach was starting to digest its large piece of meat and inside Mizuhara winced in pain. It burned her entire body as acid covered it. Her clothes she wore were in shreds and her skin was turning red.
 "Ruka...it burns let me out...please" pleaded Mizuhara
 *mmmpphhhh*
*bwarrppp*
Ruka belched again and breathed heavily as she started to touch her belly. It was wet from the sweat but it was a unique feel. Mizuhara's hand pushed out and nearby her screaming face as well. Ruka heard the scream of pain but instead of feeling sympathy she pushed it back down. Her gut churned some more and the time passed. Mizuhara's struggles got weaker and less frequent over time.
*blurgle..slosh..groan*
Mizuhara breathed heavily trying to get as much air as possible to actually breathe. The harsh conditions grew worse and worse. Air frequently leaves from burps and the acid still hurts. Her skin was becoming goopy and was falling off.
 "Fuck...I'm really going to die over a guy...I didn't even like" said Mizuhara
 Mizuhara lost all her strength and went limp as the walls fully hugged her soft goopy body. The mix of some of her melted body and acid rose further filling most of the stomach up. Mizuhara's nipples were submerged and only anything above was left. Ruka's belly was a lot squishier now and very few solid parts were left. Mizuhara watched as the sizzling hot acid got closer and closer to her face. It reached her collar bone but before it could fill to the top Mizuhara's legs gave out as well as most of her body and her head sank under. Some of her hair still floated and a few bubbles came from under but that ended pretty quickly. The head bulge went down and Ruka smiled as she heard bones snap and her belly finally rounded out.
*bwarp*
Some bones appeared a little while later as no flesh or muscle was left of Mizuhara. Her body was reduced to soup and some bones left over.
 "I'm so happy...Kazuya is mine for the taking and you will add me as fat" said Ruka
 Her gut answered back with a gurgle making Ruka giggle. The sweaty squishy belly started to shrink down more and more with the mush of Mizuhara being pumped and absorbed through Ruka. Ruka moaned feeling her thighs, ass and tits gaining so much fat at once. Her ass got fat that her panties were torn off leaving her completely naked. Ruka stood up and went to her full body mirror checking her new assets out. Her belly was a small jiggly pudge with nothing left inside. Her tits grew to f cups and her thighs would smash a watermelon if they were even in a small distance. Ruka slapped her ass and it jiggled making sweat fly off. Ruka laughed and then felt as she needed to use the bathroom. Since the toilet would definitely be clogged Ruka grabbed the large garbage can in her bedroom and sat on it. Immediately a mud slide of wet dark brown shit poured out of her ass. Ruka moaned feeling her asshole open up for the warm shit and looked back with a blushing face.
*splat...plop...plop..thud*
Thick turds hit the walls of the trash can and slid down to the bottom. Luckily a bag was in the can so she can just tie it and throw the waste away. The smelly butt loaf filled the trash can half way as more undigested pieces came. Bones and hair were starting to mix in making white specks. Some large bones such as half of Mizuhara's ribcage splat into the pile covered in feces. The last bone to come was a cracked skull with a log coming out of a socket. A few thick logs came out after and finally Ruka was done. She used her torn panties to wipe and through them in the can. Ruka cringed at looking at the brown waste and quickly tied it sealing the smell inside. Tired from the whole ordeal Ruka crashed on her bed and slept for the rest of the day.