Ruby regained her senses. After losing herself in lustful thought, she awoke to find herself still buried between Yang's tits. The blonde's massive breasts were warm, fluffy marshmallows surrounding her in the heat of skin and the scent of lilac. Her skin was shining, as she'd just gotten out of the shower; Yang was a big, busty pillow emanating loving feelings, sexual attraction, and intoxicating steam. Ruby, face pressed firmly into the legendary rack, was melting.
Ruby was still squirming from earlier. Yang had given her a massage, each stroke on her back threatening to cause the dark-haired girl to crumble and scream, the sensations burning her. The warmth she felt nuzzled between the blonde's breasts was matched only by her desire to return her affections; Ruby gasped for breath before pursing her lips and kissing the copious amounts of skin surrounding her. Before, she had simply kissed Yang's breasts, but this was more akin to a passionate moment shared between two people in the dark. Ruby tasted Yang's damp skin as she assaulted her with kisses, drawing her soft pink lips across the pale breasts engulfing her.
The day before, Ruby had been unsure that kissing Yang's breasts after hugging her was a good idea. Even after the blonde made an unmistakable moan, Ruby wasn't sure that this was something that should be done. Today, though, this was right; in addition to letting out quick, breathless sighs, Yang had interrupted stroking Ruby's hair and had pushed her even deeper into her bust. Considering that there was plenty of valley unexplored, Ruby had no issues with her head being drawn closer to Yang's heart. It helped that her massive breasts only got warmer as Yang got even more turned on. Ruby was in a soft, marshmallow heaven.
Unable to control herself, Ruby continued her own version of a massage. Peppering Yang's breasts with kisses brought on so many feelings only helped by the blonde's increasingly shorter moans. After realizing that her hands were currently not touching her sister, Ruby saw fit to use them; first, she rounded her calloused fingers around the blonde's hips, but quickly found enough greed to push up to her breasts. Now finding a foothold to carry herself, Ruby felt the gaps between her fingers line up perfectly with the underside of Yang's considerable chest. Ruby's fingers lovingly played with the soft skin, making her even bolder.
Able to hold her face up, Ruby thought of more ways to reward Yang's love. Her sister had always been there for her, and now she was finally able to find a way to express her love; desiring nothing more than to make Yang feel good, Ruby let her tongue experimentally poke out of her mouth. The taste of Yang filled her mouth as she began licking the skin between her cleavage. Ruby was already crazy with lust, but this action sent Yang over the edge; with a sharp gasp, the blonde's fingers stopped threading through Ruby's hair and began pulling. The combination of the licking and cupping of her boobs was enough to send a shock through the blonde; fresh out of a hot shower, her skin was even more sensitive than normal.
Yang was quickly approaching her limit. Despite her vast inexperience, Ruby was someone completely in control, consumed by her lust, but no longer finding herself on the edge of pleasure. The role reversal gave the dark-haired girl more want to rule over her sister; whereas none would be remiss to peg the diminutive girl as submissive, she took the reins and felt her hands shift.
Ruby's newfound bravery led her to the top hem of her sister's tube top. It was thick, black, and was clearly straining against Yang's bust; deciding to ease the suffering of the garment, Ruby saw fit to make her sister suffer as she began dragging it down. Yang gasped nervously as her breasts broke free of her top, her jiggling chest now visible to Ruby. Rarely was the blonde embarrassed, but the loss of her modesty caused her to relax her grip on her sister's head. She attempted to push Ruby off of her, desiring to cover up, but the girl would have none of it.
Ignoring Yang's uncertain nervous gasps, Ruby's only senses were focused on the blonde's nipples. Now that her sister was exposed, now that she was nervous, now that she wasn't in control, Ruby could finally take control. Furious at her sister for stopping her petting, Ruby glided over to one of Yang's nipples and wrapped her lips around it; she hungrily ran her tongue over the nub, clearly stiff with arousal. Embarrassed or not, Yang couldn't hide the signs her body was giving off in spades.
Wanting to be the one in charge, Ruby sucked on Yang's nipple, running her tongue over it as many times as she wanted. Her efforts were rewarded by the blonde gasping for air as she began running her fingers through her hair; loving the fact that she was being pet, she rewarded Yang's efforts by sucking her nipple, then pulling back. Ruby felt Yang's breast lift as she drew it into her mouth as much as possible before taking a tiny nip of it between her teeth.
Yang shook as Ruby gently bit her nipple. The jolt to her senses heightening every one of her pleasure centers. Unable to help herself, she pulled Ruby's head further back, digging her fingers into her hair to pull her. Ruby refused to let go of her nipple, leaving Yang to feel her breasts stretch, all while her sister was attached to it. The blonde gasped, unable to remember a time when she had felt so much in her system; every action served only to increase her desire.
"Ru-Rubyyy~" Yang moaned, the name passing lovingly through her lips. Needing to feel the pleasure again, Yang tightly gripped Ruby's hair once more, then pulled her away. No matter what, Ruby refused to release herself from the blonde's nipple, leading to Yang experience the stretching feeling once more. After a hitch and a moan, she drew Ruby close, the back again. She heard a murmured giggle from her sister, letting her know that she wasn't about to let go.
Ruby responded to having her hair pulled by nearly climaxing. The pain instead drive her to a madness she had never felt, but wanted so much more of. Deciding Yang needed revenge, she pushed her tongue forward, licking and toying with the nipple already in her mouth.
"Ruby~" Yang gasped, her voice barely above a whisper. Needing the feeling again, she began drawing Ruby's head back over and over again, stretching her breasts while also getting it sucked and licked.
Just when Yang was about to climax from the stimulation to her breast, Ruby released her nipple from her mouth, gasping for air. The tiny woman had ignored her basic body functions, but couldn't sustain the torture anymore; wrought with guilt she couldn't make Yang finish, Ruby began apologizing. "I-I'm sorry! I know I wasn't supposed to do that and it was weird and I'm not sure if I should–"
Ruby cries were interrupted by Yang grabbing her face and drawing her into a kiss. If Ruby had thought Yang's breasts were soft and fragrant, she couldn't compare her lips; if there was one thing Yang knew better than being sex appeal in human form, it was making out with someone. Though gentle, Yang was capturing Ruby, pressing her breasts into the dark-haired girl's chest and running her hands through her hair far more peaceful than before. Replacing her desperate tugs, she returned to letting Ruby, occasionally drawing her hands down her sister's face.
Ruby, still caught off guard by the whole situation, stared at Yang's face for several seconds. Eventually, she realized that she was being kissed; she'd never kissed anyone, but this felt so right that it had to be the sort of love she saw in the movies, where people would waste hours with their lips connected. Ruby reciprocated Yang's kiss, needing the validation and love that it provided. Eventually, however, something in her broke, or more accurately changed into something different.
Using all of her strength, Ruby shoved her sister down onto her bed. Yang offered zero resistance, unable to stop what she felt was coming. Letting her instincts and her limited knowledge of porn guide her, Ruby began massaging Yang's breast once more, then moved her free hand towards the blonde's shorts. Having seen the effects already, she lightly bit the nipple she'd previously ignored, then brushed aside her shorts; Ruby smiled as she found out firsthand that Yang wasn't wearing any panties, then stretched to a lecherous grin as she breached the blonde's core.
Yang felt a finger enter her womanhood. On top of the mouth currently sucking on her nipple, she was powerless. She could barely think, let alone resist; if the door to the dorm blew open and the world was looking at her, she wouldn't think twice about it. Yang was too busy learning exactly what having a woman inside of her felt like. Ruby, for her lack of experience, was gently rubbing every last one of her many, many buttons.
Ruby lifted her head off of Yang's boob for a moment to breathe and to gaze at her prize. The ultimate gift Yang was giving was her face, twisted in pleasure and ecstasy, holding back screens. Her were clapped over her mouth, but the errant gasp easily breached through her fingers. Ruby giggled at her normally-in-charge sister, then had a delightful thought. Staying true to her name, rose petals fluttered as the speedster utilized a Semblance in such a way as to make Yang Xiao Long forget her name along with everything else.
Even though she was already bucking her hips every way she could, nothing in the world could have prepared her for what Ruby did next. After returning to sucking on her nipple, the dark woman used her Semblance to increase her fingering speed. While her healthy strokes were enough to bring Yang to the edge, the added intensity was too much.
Yang broke.
Throwing her hands to the bed, Yang clenched the sheets with all of her might. Threatening to tear the mattress to pieces, she screamed, letting her vocal chords alert everyone remotely close to her that she had just climaxed. This had been the first time she had been overwhelmed during sex, and her eyes glowing crimson coupled with her hair bursting into a miniature sun proved that the person on top of her had turned her into a wreck. She wasn't Yang anymore; she was a being of pure pleasure, unaware of any surroundings and any feeling not related to her pleasure centers.
Seeing that her work was done, Ruby gave Yang mercy by releasing her nipple from her mouth and drawing her finger out of her womanhood. She sat up, confused and satisfied by what just happened.
"Ahh, ahh, ahh…" Yang panted, no breath left in her lungs. Every last word had turned into a scream marking her climax, and she was drained of any energy she had previously. It took several minutes for her to even remember how to process her sight; the colors of the room gradually faded in, her vision dominated by Ruby's dark red hair and her pale skin contained by her red sports bra. "R-Ruby…"
"Yang…" Ruby said, moving to caress the blonde's face.
Without a word, Yang intercepted Ruby's hand, intercepting her wrist. Swinging off the bed, she began dragging her sister towards the shower, her mind completely blank save her desire to not let her pleasure end.