The Lucario had woken up in a place he's never been to before, the forest was very dark, his red eyes seeming to glow in the dark. He sat up and looked around, and immediately rubbed the area between his ears, bruised and hurting. The last thing he remembers is sensing something close to him, and then it went dark. Whoever they are, they must've captured him! After realizing this, he looks around, his eyes adjusting to the darkness some more to see that it was nothing but trees all around him, but no... Enemies? None of his captors? He couldn’t sense anything other than small animals that are natural to forests. This doesn’t seem like a place to put somebody when they're captured, there's no house or anything.
The Lucario started to stand, brushing himself off. He'd gather his sense, rub his head again, and look around; there was nothing but dense, dark forest. But, since he sensed no living danger, he decided to make his way through the forest, pushing his way through the bushes and trees, his deep voice causing a low grumble as he walked through. He brushed against something, being unsure what it is, it felt wooden. He’d look at it, seeing that it was a sign, but it was pretty dark so he had to get close to see. Stepping a bit closer, his footpaws would sink into the ground a bit. Wait, was he actually sinking? He looked down to his feet, noticing the ground start to take him in, which caused him to look back at the sign, which read “Danger: Quicksand!”
Luckily, the Lucario wasn’t just some normal damsel in distress, he was quite strong and agile, quickly being able to free his feet with loud squishing and schlopping noises, though his feet were now completely dirty with the thick mud, causing him to grumble a little. The easiest thing he could do at this point would be to hop up onto the trees to keep him from getting into danger, but when he was knocked out in the first place, he could barely sense what was a foot behind him, whatever it was could still be here and the high ground would make him very easily seen and heard.
Having heard stories of quicksand, he knew it wasn’t as deep as it’s led on to be, but as he was standing there weighing his options, the ground he thought was safe turned out to still be dangerously sucking him down, is long black legs almost completely gone during his train of thought. With a bit of a noise of surprise, he’d struggle to get his legs out, and luckily he was still the powerful Lucario he always has been, retreating to the safety of a tree once he pulled his legs out. He only guessed it was safe where he was, but it seemed to be a good guess since he wasn’t sinking here. He took this time to wipe the mud off his legs, kicking and rubbing to get most of it off.
With a sigh, he decided it was best to take his chances with unstable ground. He was a Lucario, dang it, no mere quicksand can stop him, he was quick, light, and pretty dang strong! It was the correct line of thought for him to prep himself up, and made him smile a bit at the thought of being scared of some dirt, all he needed to do was keep moving and stay light on his step, he’ll be just fine. He thought that, before looking back at the ground, only a mere minute has gone by and the places where he started sinking before leveled out already, even his paw marks on the surface had disappeared, which was quite interesting to him. He’d kneel down, thankfully on some solid ground, and press his thick paw into the ground, it easily taking in his round fingers and down to the spike on top, felt quite warm and nice even. This feeling made a lot more sense after having heard of people taking mud baths and such and this being basically the same thing. He’d tug his paw out, it seeming to really not want to let it go as it hungrily glopped as he pulled away. His red eyes went a bit wide as he watched the stuff roll into the hole and level out as if he never touched it. He would move his big round fingers a bit to feel the slickness of the sand before wiping it off, this stuff seemed a little different than what he’s heard before, and all the darkness seemed to be getting to him, feeling that things might be behind him now, canceling the option of just not going through the quicksand patches.
Well, it was now or never really, his naturally agile form let him be able to ‘bounce’ on the surface while he trekked through, but something seemed wrong. With every step, no matter how soft, the ground itself seemed to be getting softer as well, and the little pats his paws made turned into splishes and splashes, and then turned into glorps and schlops as his feet were starting to get sucked in with every step even after he pulled out. He looked down and noticed that his paws were coated in the stuff already, making it much easier for is paws to break the surface, but he had to keep moving.
He eventually saw a clearing up ahead, thinking it might be a way out, so he ran through the trees into the clearing when his legs quickly sunk into the darker, brown sand, taking him down to the blue of his thighs while he looking like he was running in slow motion. The quicksand made a loud ‘gloorrrbbbbllbbl’ when he sunk in, and bubbles quickly formed around him as he started sinking. Normally, this would cause most to panic, but the Lucario was strong at will and body, he wasn’t gonna let this stop him. The dark brown quicksand wasn’t as thick as normal, which made it so he could slog his way through it easier, his arms up high as he wades his way through the muck. His blue thighs only lasted so long as he sunk down to his hips quite quickly due to all the moving, causing him to have to push his paws into the surface to drag his way through it. He was lucky to be what he was, the stuff usually wouldn’t let those arms go, but every time he put his paws down into the surface, they’d come back out all dirty with a schlop.
His strength only lasted so long, and he eventually ran out of breath, but had the foresight to yank his paws free from the quicksand before he needed to rest. Resting in quicksand wasn’t something he wanted to do at all, but with his mouth open, panting for breath, he didn’t have much choice, he needed his strength to keep going. While he rested, the quicksand certainly didn’t stop sucking him down, his hips disappearing while his tail poked out behind him. He understood that quicksand can sometimes be pretty deep, but he believed it wasn’t the bottomless hell that’s portrayed in fiction. He decided to look behind him to see if anybody was following, and found something worse. The large trail he left from trudging his body through the quicksand had completely disappeared, looking like he landed straight in the quicksand somehow. This made him shudder a bit, and even more when the quicksand sucked him down to his thin stomach, up and up it went. He took a deep breath and continued moving, it being MUCH harder to do after that short rest, this quicksand living up to its name instead of being slow, he somehow walked into the very soft and very active area of the quicksand, but he kept moving on, his paws needing to sink deeper and deeper every time to pull himself closer to the trees in front of him, eventually needing to shove his thin black arms down into it, wanting to grip at something under the surface but only finding more quicksand.
He was quite close to some lighter colored ground, hoping it was some safe footing to grab onto, and that was his goal, pushing, tugging, wading, and swimming his way towards that goal, the trail he left behind quickly closing in as if he never did anything to it, his tail sinking completely under, causing him to blush out of embarrassment. His red eyes went very wide as he looked down, his deep voice letting out a yelp of shock as he was still sinking passed his chest, the oxygen in his chest was supposed to keep him afloat! The shiny spike on his chest was getting dirty as he sunk and sunk, his feet feeling no bottom at all as he kicked them to move forward. The distance he was traveling got smaller and smaller the deeper he sank, to the point where he could feel the quicksand roll in to the trail behind him whenever he moved forward, tickling his back. The spike sunk under, leaving the Lucario up to his shoulders in the stuff, arms hovering over the surface.
He was right about this not being normal quicksand, and he had to resort to gripping his tightest in the quicksand and start to hump at it to move forward, causing the surface to wobble and shake. His strength fading, he didn’t have the energy to pull his arms out again, watching as one sunk under, and didn’t come back up. He still had one arm out, which he reached for the tan sand at the edge of the bottomless stuff he was sinking in, not close enough… He’d hump a few more times before he noticed all the soft sand had been working over his hips, and his cock, which popped free from his fuzzy sheath. He blushed wildly as red rolled right over his face, his whole cock being rubbed and almost stroked by the soft and gentle hands of that sand, knot too. By the time he noticed, his cock was already starting to cum his hot load into the warm quicksand, the stuff wasn’t normal indeed.
His humping was for an entirely different reason, wanting more and more pleasure from this stuff, even as his shoulders and neck sunk under. The quicksand was using pleasure to distract this Lucario so it can suck him under, and with his eyes closed, it was doing that job well. He did get closer and closer to that edge without knowing, the quicksand seeming to suck him down even faster the more he thrusts into the stuff, his mouth completely sinking under, causing his breathing to come through his nose and blow particles of sand away with every breath. His arm had sunk in completely, only leaving a muddy paw out of the surface, but when his mouth did sink under; his senses came back to him as he noticed his paw could reach solid ground! He couldn’t ignore the pleasure even when he stopped cumming, it stroking and stroking at his cock and knot, giving him the idea to just let go and give up, and sink under…
No, he had to get out! His eyes shot open as his nose sunk under, cutting off his ability to breathe, and those ovals of hair behind his head flattened out on the surface. With one final push, his paw landed right on that tan sand, feeling that it was solid… Before he watched in horror as the light sand rolled over his paw, sinking it completely. It was just more quicksand ahead of him, and with the surface rolling over the top of his muzzle, he did finally give up and give into the quicksand. He stopped fighting it and stopped struggling, letting it suck him down and swallow him. He closed his eyes, bubbles popping up in front of his face as he couldn’t hold his breath any more, letting it go as the quicksand sucked in those ovals of hair, leaving the tips of his ears, before with a final satisfied gurgle, the quicksand had taken in the Lucario completely. A few more bubbles formed up in the little dent where his head sunk under, before the sand rolled over it and filled in, flattening out before the final bubble popped, leaving the Lucario deep under the endless sea of quicksand.