"Bigger?" Yuki asked in a confused tone. You weren't sure why you had said that. "You wish I was bigger?" Yuki had a knack for making you speak your mind. Even if it was subconscious. You slowly nodded, still unsure why you said that. You were largely on autopilot when you spoke to her. You weren't exactly opposed to her being bigger in several ways, and once you thought about it some it was just sort of natural.
You had always been drawn to bigger girls, and you admitted as much to her. After a little while, you were discussing what about her being bigger you meant. More or less you meant everything; bigger breasts, longer legs, taller, everything.
She still seemed confused, but she didn't seem upset. Instead she looked up to you with those blue eyes you were constantly lost in and she squished her breasts together as she smiled. "I know you think they're small, but you can still have fun with these tonight, right?" She pulled you in for a kiss and the rest of the night was a blur.
Eventually you fell asleep in each other's arms and a dreamless sleep followed. The last thing you remembered was her whispering something into your ear. "I will be much bigger by the time you wake up."
When your eyes fluttered open, Yuki sat on the edge of the bed. "I need to go shopping for a new wardrobe." She folded her arms under her breasts gave a sweet smile. She was taller than you now and you could clearly see her breasts from behind. You flopped out of bed and hurried to see her from the front.
"Everything is so small now." Everything that wasn't her anyways. "I don't know if the stores will have clothes big enough for me..." That statement flooded your mind with thoughts of her destroying bras and bursting buttons trying to squeeze into anything at all. It excited you to imagine. Her smile broadened and she pulled you against her.
Half your torso felt the rapturous softness of her breasts, and then you felt her plump thighs wrap around your waist. That was when you said it. One of her ears twitched, and she looked to you. "You still wish I was bigger?" she repeated. Why did you say that? What possessed you to say such things over and over?
Another deep kiss broke that train of thought, and you were lost in her intoxicating taste. Every one of your senses were close to overloading and she was pushing your body to its limits. You faintly remembered something about granting your every wish, but for all you knew it was a dream.
The next time your eyes took in light, you zeroed in on the beach balls that hung over you like a pair of lustful moons. "Good morning." Yuki's gentle smile put you at ease. "I got some new clothes, but I'm guessing you'd prefer I wore as little of them as possible." You stared up at her speechless. She was as close to perfect as a person could get. She planted her arms to either side of you, hands big enough to hold your head like an apple spread just inches from your head. You couldn't believe what you were seeing. And yet...
"Even bigger?" She had only the faintest bit of concern in her voice, but it disappeared as soon as it arrived. "You still wish I was even bigger?" How many times would you wish that? She slowly lowered until she lay on top of you. She was more than twice your height, and most of your body was covered by the warm, doughy flesh of her breasts. "There is always room for improvement. Shall we see how much better bigger is?"
Another kiss, and you were lost. You don't know for how long. It could have been minutes or days, but you didn't care. When you stumbled out of bed, you needed to be back with her again. You were almost physically addicted to how she made you feel.
"I'm out here!" Yuki called. You ran out to the backyard and bounced off one of her breasts. "We might have to move," she said apologetically. She laid across the small chunk of verdant field that was fenced in to be yours. Every breath caused her breasts to advance two inches closer, but they only retreated a single inch when she exhaled. Each of those heavenly mounds had grown so big she couldn't even reach all the way around one of them, much less both. You were pretty sure everything else had ripened nicely, but you would have to walk a ways to see for sure.
She wobbled forward on her breasts while you stared slack-jawed and picked you up like a small doll. "I was thinking somewhere more open, like Washington or Texas. What do you think?"
"Much bigger?" Yuki repeated. You felt tired after wishing that. Maybe you had Pavloved yourself? She tilted her head in confusion as she looked down on you. "How much bigger is 'much bigger'?" Her eyes glittered at your answer. "Just bigger?" Your world seemed to dim and you could feel the slender fingers that wrapped around you first grow stronger, then grow longer.
Yuki gave you an affectionate lick. Even as your consciousness faded, you could already tell she was growing. You could hear it, too, if the sounds of crushing buildings were any indication. "You'll get whatever you wish for," was the last thing you heard.
When you finally came to, you found yourself on an immense field in the mountains. Looking ahead you could only see Yuki. Mountains lay between you and her and even they were dwarfed by her being barely small rocks by comparison. "Good morning," she sang when she could see you move. "Before you say anything, I need to tell you some things finally."
Your breath caught in your throat. As you stared at the vixen in the distance, you could see a large mountain slowly disappear underneath one of her breasts. And then another. One of her ears twitched and a cloud was scattered. "Your wishes come true. The things you really and truly want come into being. You wished for your perfect girlfriend and here I am. You kept wishing for me to be bigger, and look at me now!"
She began squirming and trying to reach for her breasts. "F-full..." she whined. While she reached for her nipples the crawled further out of her reach. Before your eyes Yuki's breasts swelled even faster. "Y-you wished for... m-milk...?" You were both helpless. Her to do anything about the unreal pressure that filled her, and you to do anything but watch Yuki reach scales you had only dreamed of.
Slowly, dark spots appeared on her lingerie. Then it was like the floodgates had been released. Streams of white cream poured from Yuki and flooded the lands below. You could only stare, and as the wave rapidly approached, you wished this could last forever.