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You finally have that asshole pinned beneath you, laying in the dirt. He's sweating, cursing, hissing, spitting. He hates this. That's why you like it so much. The sweat makes his hair stick to his face... It looks kinda... Whatever. Not important.
"GET OFFA' ME YOU WWRETCHED-" a swift kick to the jaw shuts him up. You're pretty sure he just bit a little of his tongue off. Good. Fuck him. Actually, that's a great idea.
"I'm not getting off of you until I've claimed my prize~"
"Wwhat prize?"
"You." You begin to slide off his pants as his face flushes violet. He begins sputtering like a car with a dead battery, his fins flaring in all different directions before... He finally gives the signal for submission. Good thing that, even though he's a bit daft, he knows his place.
You release him briefly, and when he doesn't immediately run, you strip him the rest of the way. Once he's shirtless, you trace his trim body with your fingertips, noting to rub his grubscars a little to make him squirm.
You rub his horns and he whines. You want him as overstimulated as possible, you'd think it'd suit him well.
You get off of Eridan and sit near his legs, grabbing his bulge. Slowly, you lick the writhing appendage from its thick base to its thin tip. As you expected, Eridan bucks his hips up. You smack his thigh and push his hips down
"Wait for it if you want it."
"Oh come on! Just do it already!"
"Who won the fight again? Not you, that's for sure. You wait for my input here." Eridan goes quiet with a sigh, "Good decision."
You put his bulge in your mouth all at once, running your tongue up and down it and rubbing the base, which you can't quite shove down your throat.
You feel his bulge thrashing in your throat, and before long, you feel cum coating your insides. You pull his bulge out of your mouth with a gentle pop and allow his genmat to coat his stomach. You cut off his complaining by putting a finger to his lips.
"You look much better messy. I'll clean you up later. Consider it a kind of punishment for cumming so soon"
Hovering your hips above his, you stare at him, eyes half-lidded. He gulps, nods, and you drop your hips.
You hold back a moan. Being filled with writhing, dripping wet bulge doesn't feel too bad.
You smile, circling your hips at a steady pace while you trace Eridan's trim body with feather-light fingertips once more. Now that you look at him - his panting, violet flushed face with pretty fluttering gills - and maybe, you think, he's not too bad. He's doing a good job now, sitting still, moaning, and keening all pretty and shit.
You decide to take a risk. You lean down and smush your lips to his, and he licks at your mouth impatiently. He allows you access to his mouth and your tongues swirl around each other as you comb through his hair.
He shoots cum into you with an overstimulated whine, his thighs jerking around and then wrapping around you a bit. He grips your thigh, digging his nails into your flesh a little.
You pick him up and carry him back to your place, chatting with him along the way about how he was pretty good at fighting, and a good opponent. Eridan doesn't respond much, he seems tired.
"Can you... Clean me up noww?"
"Yeah, I'll run a bath, one sec."
Warm, bubbly water fills your large tub. You strip and get in the water with Eridan. He trills at the feeling of the warm water. You take a wet washcloth and rub his thighs and stomach, which are covered in cum. You plant kisses all over his face as you wash the dirt off his body with gentle strokes of the cloth.
The two of you lay in your bed, arms wrapped around one another.
"Maybe... You're not so bad."
"Same to you, Eridan~"