Relationship 'help' (Part 1)

It wasn't long before Kuroko teleported in, holding Uiharu bridal carry style and setting her down. "Hello. Onee-Sama." Kuroko said, grinning at seeing Misaka, her eternal lover/friend and roommate (depending on who you asked).

"Hey, Kuroko, Uiharu. How was work?" Mikoto asked casually. She could already see Saten moving behind Uiharu; After all these years of knowing them, what was about to happen next was obvious.

"U-i-ha-ru!" Saten said tossing her friend's skirt up from behind. "Hmm, interesting choice today~" Was Misaka imagining it, or did Saten purr when she said it?

"Saten!" The programming master of Judgment turned to her friend. "Do you have to do that every time!?" She shouted out, blushing and flustered. Saten merely looked aside blushing with a grin.

"Let's just head in, lunch is waiting." Misaka says. leading the others into Joseph's.

After entering, the girls got to chatting about various topics: classes, Judgement work, Misaka's obsession with Gekota, each of their measurements - that last one bothered Mikoto for some reason but she wasn't sure as to why - all in all, a good and normal lunch so far. Then...

"I need to use the bathroom." Mikoto said, getting up and heading over to the bathroom. Odd, especially since she didn't really feel like needing to go. She casually strolled into the bathroom, looking at herself in the mirror. "Hmm, I think it's time for me to test that new application of my abilities!" She declared confidently as she shucked off her top, internally very confused as to what she's doing or why she said that.

Damn it! Is this that moron's handiwork!? The Electromaster fumed internally as she watched herself in the mirror, confidently grinning as her hands reached up to her meager breasts, gripping them tightly.

"Now then, lets see Misaki look down on me after this!" Mikoto was suddenly suspicious about what was about to occur. And she was proven right, as her hands suddenly coursed electricity through her bra into her breasts as they needed her meager mounds like dough.

An analogy that proved very apt as the began swelling before her in the reflection, able to feel them shifting between her fingers beneath the bra. It was a pleasant sensation (not something she'd ever willingly admit out loud, but the lewd expression on her face seemed a bit much - her tongue curling out of her mouth as she grinned wildly.

A snap returned her focus to her chest, She'd have gone bug-eyed if she could - her chest had gone up three cup sizes easy, her bra snapping off from the strain. She had breasts - no, that wasn't right, she had boobs! Tits! Gazongas! Mommy Milkers! they were easily bigger than Misaki's now comparatively tiny chest.

As the swelling subsided, Misaka felt herself regain control of her body, and immediately felt herself fall forward, catching the edge of the sink with her hands and chest. "Oww... okay, these are heavy." She muttered, the shock causing her to miss that she had actually said that out loud. trying to get off the side of the sink, she tried using the Rampage Dress skill - using her electricity to stimulate her muscles for extra strength. To her great surprise she suddenly found herself stumbling back as her new rack felt weightless! She wasn't that good with her internal electrical skills... or so she thought, but looking over herself, she suddenly found her body coursing with new muscles from the stimulation.

"...I'm still going to try punching him for this, but at least these are nice..." She grumbled, taking a few moments to use her new muscles to bounce her chest about, admiring it as it bounced around. Looking it over, they were definitely bigger than Misaki's, almost as big as her mother's set of knockers. Definitely gloat worthy.

The legendary Railgun was very distracted with playing with her new chest. Too much to notice her vocabulary change for how she referred to her breasts, too much to ponder how she might have to hide these on her way out the door, and definitely too distracted to notice the sound of the bathroom door opening...

At least, until a certain teleporting pervert warped directly in front of her, grabbing the breasts and diving face first into the new cleavage and gave an muffled scream of delight. "ONEE-SAMA'S POTENTIAL HAS FINALLY BLOSSOMED!!!!"

(Hope you like the chapter! feel free to give thoughts and suggestions for the next chapter in the comments!)