I couldn't stop thinking about @neonspirals tentacle bf au so I sent an anon message to ask if writing sth would be okay wrote a little thing. I hope you like it!
-> Arthur is trans, his genitals are referred to as clit, lips, hole and so on (just a heads up if anyone's uncomfortable with that); tentacles (duh), maybe a little size kink?, might seem dubcon but it’s not. I don't know what else to say, it's actually really fluffy.
Arthur stirred in his sleep. A quiet whine and the rustling of the bedsheets disturbing the peace of the night. He reached out to pet the end of the tentacle resting next to him, turning his head that was bedded on the thicker part of it.
The tentacle underneath his head didn't move, but at Arthur's feet two others soundlessly emerged from the mattress, wriggling underneath the blanket.
They slid up against his legs, teasing the skin and putting a little smile on his lips. Arthur shifted a little and rubbed his legs against the smooth appendage out of reflex, still hardly awake.
The tentacles carefully found their way around his legs, wrapping themselves around them. One of them slid up far enough to caress Arthur's fingers and entwine with them while the other glided up his inner thigh. The touch on Arthur's thigh went from the tip of the tentacle tickling him to a more firm grip as soon as the thicker part of it was wrapped around his thigh, sliding in between his legs.
Arthur's breath hitched, the tentacle slowly rubbing against him through his panties as he finally stirred awake. He slowly blinked his eyes open, but it was still too dark to actually focus on anything around the room. The pressure of the tentacle between his legs became a little more fierce and Arthur's eyes fell shut again.
A content sigh left his lips when the tentacles wrapped around both his legs to spread them a little wider and Arthur ran his thumb over the thinner end of the tentacle that was woven around his fingers. The wet patch staining his panties grew bigger with every rub against his clit and Arthur quietly cursed the fabric separating him from getting proper stimulation.
As if they were reading his mind the tentacles slipped beneath his panties, pulling them down a little to make room for them in the interspace. They slowly crept up his inner thighs again, meeting between Arthur's legs. One of them pressed between his lips, dipping into the wetness and making Arthur gasp, while the other focused on holding his legs apart.
The initial surprise quickly turned into pleasure when the tentacle kept rubbing and pulsating against his clit. Arthur's breathing got heavier and he broke into a slight sweat. It felt so good, but... but... A buck of Arthur's hips was all it needed to let the tentacles know he wanted to feel more of them.
He moaned when one of them finally urged inside him, wiggling slightly. With his free hand Arthur reached down to lightly hold onto the tentacle penetrating him. He felt it gliding through his hand inside him. The thick girth stretched him to a point where the slight burn made Arthur hiss, but the wetness dripping from his hole spread around it and it quickly turned into a pleasurable feeling.
Arthur lightly touched himself where he and his boyfriend connected and felt his juices dribble from his slit as the tentacle kept moving. It didn't need any hard thrusts to make him squirm and moan, the feeling of the tentacles caressing his skin, keeping him in place, and wiggling deep inside him was already enough.
The heat in his abdomen became tighter and Arthur turned his upper body a little, clinging onto the tick tentacle he had been using as a pillow all night. It didn't move but he could feel the muscles contract underneath his cheek as he pressed multiple kisses onto it. A breathless laugh escaped Arthur when he felt the rounded tip of one of the other tentacles nudge his cheek to get his attention.
When he turned his face towards it, it wandered from his flushed cheek to his lips, grazing them as if to kiss him back. With one hand he reached up to pet it and opened his lips for them to deepen the kiss. His tongue played with the tip, panting breaths coming from Arthur's mouth whenever the tentacle gave him a little break.
The one inside him curled up a little, knowing exactly how to find the sweet spot inside him that made Arthur buck his hips, searching for more. He swore he could hear a faint snicker echoing from the walls, but was too far gone to care or investigate it.
His moans became louder, more frantic, nearly turning into cries as the tentacles' grip on his body tightened. Part of it kept fucking in and out of him at a slow pace while stimulating him from inside over and over. Arthur gasped and bucked his hips desperately, when the wet tip of the tentacle he had been making out with touched one of his nipples. He was so close. If he didn't know that his boyfriend would restrain his arms if he tried touching himself now, he would help himself to his orgasm.
Once again the tentacles seemed to sense what he needed, and Arthur felt the one that was holding his leg in place move. It pressed against his swollen clit, one of the suction cups engulfing it. The stimulation drew a sob from Arthur's throat. The suction cup tightened around his clit just as the other tentacle found his g spot again and he came with a cry.
A few stray tears escaped his eyes when his boyfriend kept up his ministrations. It only stopped after Arthur's body fell limp from being wrecked by another three orgasms. He lost the feeling of time, nodding off from the exhaustion soon, but when Arthur woke up, he found himself savely wrapped in the tentacles keeping him warm.