A Big Mako Reaction (Patreon)

The Avalanche crew all sat quietly in their empty train car in their thoughts, Tifa looking around at all the faces she knew and trusted. Biggs, Wedge, Jesse, their massive gun arm sporting leader Barret, her childhood friend Cloud, and the flower girl Aerith. Everyone was on edge. They were finally going to take down one of the mako reactors today.

Barret stood up in the middle of the train car aisle “aright fools listen up,” he barked in his loud baritone voice, drawing everyone's attention. “This is the big one here today, so I don’t want any of you pissin yourselves and cryin for yer mama!” he said as he glared around the car. “Y’all got on this train that means you’re in it till the job is done,” he pointed his gun arm out the window at the mako reactor they were closing in on.

“That job is blowing up that there mako reactor, so those filthy Shinra dogs can stop stealing the goddamn life force of the planet!” he turned and started walking down the aisles. “When this train stops we move out, hard and fast, get in, set the bomb, get out!” He slammed his gun arm on the metal piping of the train seat “no one gets left behind, you watch each other's backs, let's get this done!” he bellowed as the train started to slow down. Everyone nodded, knowing their part in the plan.

Barret turned and looked down at the end of the train car “oh and one more thing,” he said as he pointed to the spiky blond-haired man standing in the corner “Cloud! Don’t fuck up!” He said, cocking his head to the side to illustrate the threat.

Cloud threw his hands up in the air “yeah, yeah, I got it,” he said shaking his head. Tifa still wasn’t sure why Barret was so hard on Cloud she had vouched for him.

Tifa watched as Cloud got off the train, Aerith followed quickly behind him, Tifa noticed. She grumbled before looking down and cupping her breasts to push them up a bit in her bra. Exiting the train Tifa quickly caught up to the two “hey Cloud,” Tifa said getting his attention “don’t let Barret bother you,” she added putting her arms behind her back to emphasize her chest. “He’s just stressed out right now, he’s a big teddy bear when you get to know him,” Tifa said smiling at Cloud.

Cloud looked at Tifa and nodded “Yeah, whatever, it’s alright,” Cloud slowed to a stop “hey both of you hold up a second would you?” He said, speaking to both Tifa and Aerith. Fishing into a pouch on his side he pulled out two materia “here for both of you, one each to keep you safe on the mission.” He held out the two materia in his hand.

“Oh wow Cloud! That’s so nice!” Aerith said in her usual cheery tone.

Tifa picked hers up as well “yeah this is so unlike you Cloud, what’s up?” Tifa said, looking at Cloud concerned.

Cloud rubbed the back of his head “nothing is up,” he said grinning sheepishly “I just care about the two of you so I wanted to make sure you stayed safe,” he added.

Tifa looked at him again then shrugged. Maybe he had grown up more than she thought. Tifa popped the materia into her bangle. As she did she heard a moan coming from Aerith “ohhhh Cloud,” she cooed Tifa looked over to see Aerith’s ass swelling out bigger and bigger in her dress. It had nearly tripled in size and was still swiftly expanding out in all directions. “Mmmmm” Aerith groaned “is this what you like Cloud?” She said, shaking her much larger butt.

Tifa felt a tingle come over her, growing stronger and stronger, building in her breasts above all else. Tifa’s already impressive bosoms ballooned out in front of her eyes “Unnghh Cloud, you can’t be serious,” Tifa groaned again as her breasts lurched out even bigger. Filling her top and pushing her suspenders to the sides. “Mmmmmm it feels good,” Tifa moaned as her tits swelled and swelled until she looked like she had beach balls stuffed under her top.

“Now what the hell are you people,” Barret stopped mid-sentence when he saw what was going on. “Awwwwww no, no, no, no, no!” He put his face into his palm “why does our brawler have a new pair of punching bags!?” he shouted. Aerith moaned again as her ass made another push bigger drawing Barret's attention “and what the hell is happenin, Oh Damn Look at That Booty!” Barret blurted out just as Aerith's dress split, exposing her pale, plump, juicy, round, bean bag chair sized ass cheeks.

Aerith giggled and blushed, she seemed to enjoy what was going on a lot more than anyone else. “Oh my it just keeps getting bigger,” she said chewing her lip rubbing her exposed butt cheeks. As she moaned again, this time more than just her ass expanded. Aerith grew taller, her hips swelled wider, her breasts even joined in now as well growing out like bread dough rising.

Tifa felt another growth spurt coming over her. She gasped with pleasure as her breasts leaped out bursting from her top. Her nipples grew hard as the cool air blew across her amplified tits. Tifa reached out to cover her nipples trying to have some sense of modesty. As she cupped her nipples she shuddered in pleasure “ohh fuck they’re so sensitive!” She moaned, rubbing them hard.

This would only last for a few seconds though. Once the next growth spurt kicked in, Tifa, like Aerith, found herself getting bigger all over. Her leather skirt creaked as her hips flared out, doubling in size. Her belt burst as her ass cheeks grew fatter and fatter behind her, filling out the rest of her curves. Tifa was now taller than Barret, the large man gapped up at her as she continued to grow bigger and bigger.

The two women moaned and sighed in pleasure as their growth only seemed to pick up speed as time went on. The surge of growth happened over and over, pushing them to bigger and bigger sizes. Aerith’s dress was shredded as her body pushed out over twelve feet tall. Tifa’s suspenders were launched away with a twang as Tifa quickly outgrew her already skimpy outfit.

As they grew bigger and bigger they only seemed to grow hornier as well. “Ohhh my I’m so aroused right now Tifa! Your nipples are so large and puffy I can’t help myself I just have to,” Aerith said before tackling into Tifa and sucking roughly on her breasts.

Tifa gasped loudly, stumbling back into the building behind her. The two of them crashed through the exterior wall and fell into the building “ohhhh yes they’re so sensitive! Suck on them hard!” Tifa cried out blissfully. The other Avalanche members opted to take this as a sign to abort the mission and they all spooked off in different directions. Barret and Could remained on sight as they watched their two friends continue to grow while groping and fondling one another.

Tifa sank her hands into Aerith’s ass cheeks, rubbing them and slapping them. The two women moaned at the same time as they grew once again. As Tifa’s hips swelled wider and wider she pushed out into the neighboring buildings around her. Her breasts were so massive now they took up most of her torso, even though she was now easily over thirty feet tall. Her breasts had to be at least fifteen feet round each. Massive weather balloons jutting from her chest.

The more the two played with each other the more their passion and lust burned. They started to make out rolling over one another. Tearing through buildings while kicking up rubble all over as they continued their carnal acts. Aerith's ass cheeks were so massive and fat now they were bigger than houses. She loved how gigantic and sexy her booty was getting. She didn’t want this to end anytime soon.

Aerith’s breasts were now an impressive set too. She knew she would never catch up to the queen of boobs Tifa, but she was happy she had more than just a modest pair of boobs now. Still, it wasn’t stopping the two of them swelled and swelled and swelled bigger. They rubbed each other's pussies while gasping and moaning for more.

Tifa brought Aerith to orgasm after orgasm and Aerith did the same for Tifa. The growth heightened their pleasures so much, but still, it wasn’t enough. As the two of them grew large enough to rival the Shinra tower their growth finally came to a stop. The two hyper curvy giantesses let out groans of disappointment. “I can’t believe it’s over,” Tifa said looking down at her massive chest. She couldn’t see the ground past her football field sized tits.

“I know,” Aerith said pouting “I was just really starting to get into this, I wanted to get,” Aerith eyes lit up. “I know what we can do!” She said, grabbing Tifa by the hand and pulling her to her feet.

Tifa stumbled after Aerith “Woah what’s the rush?” she called out as she was dragged along.

Aerith pulled Tifa next to the mako reactor they had come to bomb “ta-daa!” She said, shimmying her hands at the reactor.

“Okay, it’s a mako reactor?” Tifa said, confused.

Aerith nodded eagerly “exactly, why do you think we stopped growing?” she asked.

Then it hit Tifa “we ran out of mana,” she said snapping her fingers.

Aerith grinned, "Exactly, and what is mako if not mana energy, it is the lifestream!” Aerith said, bouncing up and down eagerly causing the ground around them to shake. “So I have a naughty idea!” Aerith said, giggling, before turning around and sitting back onto the mako exhaust vent of the mako reactor. As the large vent slid deep inside Aerith’s wet pussy, she moaned loudly. This was what she had been missing from her and Tifa’s previous session. Something to penetrate her. To rub her insides.

The horny flower girl started to ride the building underneath her. As she did all of that, exhaust energy flowed into her. Aerith moaned louder as she started to grow again. Her ass cheeks spilled out over the sides of the Midgard wall as she grew and grew.

Tifa watched Aerith only for a moment “you’re a genius,” she said before making her way over to her own reactor. Tifa spread her legs and lowered herself down onto the vent. As the warmth entered her she couldn’t help but shudder and moan. It wasn’t long before she was growing again too. Her breasts pushed out across Midgard until they were wrapped around Shinra Tower.

As the two of them rode their respective buildings hard. The city of Midgard quaked and rattled. Their thrusting was causing the mako reactors to reach critical mass. Automated systems cut in to try to prevent critical mass and an explosion. The systems dumped the excess mako out of the vents. One by one the mako reactors started spewing excess mako energy into the air through their vents.

However, when the two that Aerith and Tifa were on released their excess energy it shot straight into the two horny, nympho, giantesses riding them. Tifa and Aerith screamed with pleasure as their bodies were supercharged with mako energy. Both of their eyes started to glow with mako energy. Their bodies rapidly took off growing and growing and growing.

Tifa’s breasts were the size of mountains in minutes. Aerith’s ass cheeks were pushing out into the sea. The two of them groped and fondled their giant swelling bits as they came over and over harder and harder. With so much mako energy fueling their growth it didn’t look like they were going to stop anytime soon. Much to each of their delights.

Back down in the remains of Midgard Barret pulled Cloud up over the side of the cliff that Tifa’s heel had dug into the earth. Tossing him onto the ground, Barret collapsed alongside Cloud. “Clooooooud, what pray tell was the one specific thing I told you not to do,” Barret huffed.

“Fuck up,” Cloud panted out.

Barret pushed up onto an elbow “and what did you do?”

Cloud rubbed his face with his hand “I fucked up?” he said sheepishly.

“YOU FUCKED UP!” Barret bellowed.

The End.