The Dominant Rainbow
Chapter 3: Inserting It
By: Blobskin

Contains: mlp, Rainbow Dash, micro human, body exploration, insertion
Version: 2

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Logan sat on the floor hunched forward. The Mistress was laying on the bed high above him. She had granted him several minutes to recuperate after his punishment so that he could serve her next game better. So he gratefully took the time to catch his breath. His chest was red and sore, but nothing was broken. How she knew exactly the amount of pressure he could take Logan would never know.

Eventually the Mistress ran out of patience and it was time to go back to work.

"Logan," she called as she sat upright and gazed down on him.

The man shuffled to his feet and met her eyes. "I'm here, my Mistress."

"Are you ready to go yet?" she asked. "I'm tired of waiting."

Logan was tempted to ask for more time, but quickly thought better of it. "I'm ready. What do I have to do next to please you?"

Rainbow Dash grinned and one of her huge hooves clacked as it landed on the ground a few steps ahead of him. "Get up here."

Third Game: Climb.

Logan dutifully approached the fur covered blue pillar while carefully stretching his fingers. This was going to be brutal. He paused in front of her hoof and rolled his shoulders in preparation. He peeked skyward and caught her violet eyes vigilantly watching him. If he delayed any more he may face another punishment. So Logan took a clump of her fur in each hand and began to hoist himself up the vertical wall. The Mistress giggled above. It was about five stories to reach Rainbow's cutie mark. Straight up. Luckily Logan was a strong man.

Soon the gentle laughter dissolved into coos and whinnies. The Mistress closed her eyes and focused on the sensation of the human scaling her leg. She could feel every motion. When the human released one grip and pulled his body up to quickly snatch another. Then his feet would attempt to dig into her hide as he braced himself for another stretch upward. Logan was so much smaller than her. She was a living cliff. A mountain. A goddess. His master and mistress. She was his everything. He would be left a sweaty exhausted mess just climbing her leg. This. Was. Power!

The man paid little attention to anything else. Climbing a sheer wall was tough enough, even with the convenient supply of blue fur to provide purchase. His breathing and the growing pain in his arms served as ample distractions alone. He should have tried though. The only warning he got was the Mistress grunting before she moved.

Logan felt the dense pack of muscle underneath the azure wall he clung to tense. The whole pillar shifted. It was like the texture changed beneath his fingers. Then the Mistress lifted her leg with Logan along for the ride. The man immediately spread his arms and squeezed with all his strength. She was going slow at least. The entire surface was rising and turning slightly in the air. The man could feel the pull of gravity shifting from tugging him down to tugging him sideways. Looking outward the man watched as Rainbow's leg floated over the edge of the bed and below him plush bed sheets rapidly passed by. The Mistress was laying down.

The leg that was his transport bounced as it crashed onto the mattress and Logan felt his grip slip an inch. His fingers hurt from squeezing so hard. Everything seemed to be moving as the Mistress adjusted her position. She braced her front hooves on the bed and pushed so that her body slid backward toward the pillow. Meanwhile the man just along for the ride felt his limbs jerk with the sudden movement. He smacked his temple against Rainbow's leg and grit his teeth until the appendage settled down. The Mistress dropped her head onto her pillow with a poof of air and finally everything was still.

Logan took several breaths before glancing at his surroundings. He was currently sideways, clinging to the Mistress's leg. In the distance he could see her violet eyes half-lidded gazing back at him over a field of blue. For a moment neither of them moved or said anything. She merely lazed there while he came down from the shock.

"Well?" the Mistress asked and hiked a brow dangerously. "Get up here to my muzzle."

That snapped Logan out of his paralysis and sent him scrambling back into motion. The man clambered over the hill that the mare's leg had become, aiming for the crest so that he could walk the rest of the way instead of climb. A much easier task assuming the pegasus didn't add some other element to challenge him.

As the angle of the slope leveled off, Logan was able to crawl on his hands and knees. Then he was able to stand up in a meadow of ankle high azure fur. He had managed to reach about midway to the mare's hip before she had suddenly changed position. Turning toward his final destination, the distance didn't seem too extreme. From where he was to the mare's lips was roughly twice the length of a city bus. The journey would be hilly and rhythmically moved with the pony's breathing. And the Mistress was smirking. But Logan was confident he could do this at least.

Then the leg shifted and Logan dropped to his knees to grab handfuls of blue fur. The Mistress giggled. The man huffed once and stood again defiantly. Then he held his arms out to either side and began walking. The pace was slow yet steady. Meanwhile Rainbow Dash hugged herself as she took a deep gulp of air. The landscape beneath Logan trembled and he stumbled. Gritting his teeth the man pushed on. Finally he reached the first real obstacle: the mare's thigh.

On a human this stretch of leg would have been no different than the calf. Just a fleshy column. However, the Mistress was a pony, a quadruped. With her legs spread her thigh was narrow and jutted upwards a fair distance. Her anatomy created two choices for Logan. He could try to stay atop the mare's thigh and straddle that thin steep rim. Or he could use the blue fur that covered the pony to shimmy along the cliff of her upper leg. That is to say, he could awkwardly crawl along a wall up to the Mistress's crotch.

Though just thinking about it made Logan blush, it was clearly the safer option. So the man made his way over the mare's "knee" and stepped up to the blue cliff. The muscles beneath the skin tightened and the entire leg shifted. The man dove forward and grabbed on as quickly as he could. Logan waited a moment as the Mistress calmed down, then he clambered along the cliff face.

Rainbow Dash started to sweat and her breathing became more labored. It was like having a stallion teasingly massage her right up towards her entrance. It was agonizingly slow and it drove the mare who normally lived life in the fast lane absolutely wild. The instinctual need to simply grab the cock that wasn't there and shove it in flooded her veins with adrenaline. Her every muscle screamed. Her mental circuits were overloading. Her face was flush and her tongue was starting to slip from her muzzle. She gasped. This was the most intense feeling in the world.

Logan had reached the huge mare's crotch. The man was afraid to look even as the overwhelming musk flooded his sense of smell. He could practically feel the steam of desire radiating from her passage. Despite his rational feelings though, he couldn't resist his curious urge entirely. He glanced over his shoulder even as he tried to shuffle through the fur along the mare's pubic area. Her vaginal lips were drooling everywhere and winked hungrily. It was a fleshy hole in the ground, a geyser waiting to erupt. This woman was ready to be filled. Logan gulped and turned away. The Mistress had given him an order and he would complete his mission. The man only tripped once as he vacated the area.

However, there was another erogenous zone he'd have to traverse next. The mare's teats.

The breasts of a pony were much flatter than a human woman's, but they made up for it with long perky nipples. Rainbow's boobs were entirely normal for a mare. Two wide but shallow hills topped with tall thin teats each as large as his head. Logan stepped carefully as the Mistress cooed in the distance and the landscape shivered beneath him. He soon found himself corralled into the mare's cleavage which was little more than a ditch that defined where one breast ended and the next began. Logan, more casually and with a bit more urgency, shuffled his way between the boobs of his Mistress, running his hands along either wall beside him. He could still smell that powerful musk radiating up from the mare's entrance and her teats were clearly swollen. Logan gulped. The Mistress definitely found this game to be enjoyable. As usual.

Then the Mistress thrashed.

Rainbow couldn't help the spasm that overcame her. She bucked her hips, grabbed the bed sheets, and threw her head back into the pillow. The pegasus squealed with lust as a shot of fresh juices escaped her pussy. A mini orgasm. Her eyes rolled back and she could see her breath as little clouds appeared from her drooling maw. Then she collapsed, practically melting back into the bed. Her whole body went limp for the moment.

Logan felt his own adrenaline running high as he hugged the ground beneath him. His face was pressed to the blue flesh and his knuckles were white with tension. His muscles trembled. Then he sighed and eased his grip. The world had been thrown into chaos for a split second, but now everything had gone still. He couldn't even see the Mistress's head now. She was out of it. This would be a good time to move.

Logan shakily got to his feet and began marching across the toned abs of the pegasus. The texture here was a little different beneath the thin layer of azure fur. The flesh was harder with grooves cutting across the surface that defined the trained muscle hidden beneath. The Mistress was an athlete and this belly was clear evidence that proved it. She was also sweaty and a transparent film of glistening moisture covered every inch of this zone. The smell of salt and horse was strong as Logan hurried forward.

Rainbow's chest. It rose and fell steadily with her breathing. For her the movement was probably near unnoticeable. For Logan it was like watching a mountain gain and then lose a third of its height every three seconds. The man could even just make out the ribs underneath the skin poking through like over-sized ladder rungs. Logan shook his head and dutifully continued his mission. He stepped onto the shifting barrel of his Mistress and then dropped to a crawl as he scaled the steep slope. He used his hands, knees, and feet to find purchase as he navigated upwards while trying to anticipate the inflation and deflation of the local geography. The man ascended higher and higher, the bed sinking further and further away as he climbed the Mistress's body.

He reached the mare's sternum, the bone at the center of the rib cage. It was like a sturdy sidewalk that had been covered over by grass. Blue grass. Though it shifted up and down like the rest of the Mistress's chest, it remained mostly level and it was easier for Logan to balance. Though he still kept his arms out as he progressed towards his final destination. Everything else appeared far away and blurry at this point. The terrarium that was his home. The end of the bed back where he started. Even the Mistress's splayed wings were large enough that their ends became indistinct if he looked to either horizon. Then Logan finally came to the clump of fluffy fur at the start of the mare's neck still glistening with perspiration.

Logan wiped his head and rested for a moment. Then he announced his presence to the pegasus who still seemed a little out of it. "I'm here, my Mistress!"

The mare made a groaning sound as her neck began to curl, bringing her head down into view. Her huge magenta eyes, still half lidded, focused on him. She blinked. She smirked. "Kiss your Mistress," she ordered sleepily.

Logan waited as her great muzzle lowered further for him. She puckered her lips. They filled his vision right out to the peripheries. The human stepped into the fluffy bush in front of him and leaned his hands on her mouth. He planted his head deep into the indent at the center of her lips where the two met. The kiss was short and gentle.

Logan waded backwards through the fluff. The Mistress raised her head and sighed.

"You know what happens next, right slave?" she asked huskily.

He gulped. "Yes Mistress. I am ready."

She grinned. "Hop on then and let's finish up."

A hoof landed a short walk behind him. The man shook his shoulders then strode toward the offered transport. Like last time her hoof could not lay flat for him so he had to mount what was essentially a ramp. He placed one foot on the rim and hoisted himself into the frog of her shoe. He laid down and gripped the smooth blue flesh as hard as he could. Logan expected the Mistress wanted to move fast and he was correct. As soon as he appeared situated the mare raised her hoof and it practically flew toward her nether regions. The body Logan had taken several minutes to cross flew by him below in the blink of an eye and with a gust of wind that cooled his bare skin. The journey then suddenly slowed as a heavy aroma of mare lust flooded the air.

Logan raised his head and gazed at Rainbow's vagina. Fresh cream oozed from the crevice that was her lower lips. They winked at him. Hungrily biting at the hoof that cradled him. The Mistress's legs were spread wide and she moved him into position between them. Her rainbow tail was stained with her last release, but that was hardly Logan's focus as the surface he lay on lowered and began to tilt more and more. He was now looking over his shoulder, his back facing the Mistress's gaping entrance. The man quickly corrected that by turning over. He was almost standing the hoof had upturned so much. She was about to shove him in.

The Mistress's other hoof descended into view and crudely hooked onto one of her lips. Then she pulled it back, opening the crevice a bit more for him and making the giantess squirm. Logan glanced up, meeting the mare's eye for a second. Her maw hung open and loose. There was no more waiting. The wall at the man's back advanced and forced him inside that fleshy cave. At once the Mistress's other hoof released its grip and the passage pressed in around Logan as he wriggled in the dark. He was instantly soaked in her juices and escape was impossible. Two squeezing lips on either side and a relentless hoof behind him, the only way was forward. The crevice opened and closed with the mare's contractions, desperately trying to pull the cock that wasn't there deeper. The human dutifully reached in and fought against the clasping walls as he dove down into the tunnel. He roughly massaged the mare's passage as he went, though it was hardly intentional. His hands were slipping all over the place as he blindly fumbled for any purchase that could give him the leverage he needed to continue.

Outside Rainbow Dash was neighing and thrashing. One hoof relentlessly gripped at the sheets while the other ground away at her vagina. Her back legs kicked. Her wings flapped. She was sweating and panting like some rabid animal. She could feel every twitch Logan made inside her. This was nothing like the touch of a stallion, teasing her with slow careful thrusts. This was a tickling, creeping pleasure that tortured her with its glacial pace. At the same time she felt utterly helpless, unable to do anything but wait for the bliss of release, she also felt such overwhelming power. Logan's entire body was inside her. Every moment he was completely at her mercy. Her vagina alone was crushing him from all sides and it was taking every ounce of his strength just to move.

Rainbow could feel the finale approaching. Her muscles began to wildly spasm. She couldn't breathe. She couldn't think. Her mouth opened wide in a silent scream as it hit.

Logan wasn't sure how far he'd gone. He could barely tell when he was even making progress. However, he did know when his job was done. When the cave he was exploring suddenly collapsed around him and threatened to pop him. Then the flood came. A wall of pony cream surged down the tunnel and brushed along his entire body. After a second of being trapped as a plug for the wave, the passage relaxed and Logan felt himself flowing back the way he'd come. He wasn't as fast as the river, but he found himself sliding back into the outside world once again. He plummeted two full stories onto a huge tangle of rainbow colored hair with a wet splash while still more of the Mistress's release dribbled down around him.

Logan laid there, soaked and exhausted for several minutes as the warm liquid cooled. His chest heaved and his arms burned. The Mistress was finally satisfied.