(Two things. 1. I'm writing a ton of fanfiction now because KlaudiaBogdan commented, which motivated me to work more, so it's all their fault. And 2. I promised smut, you will get smut.)

   "Seb, quiet. I'm busy if you can't see." Ruvik growls at the taller man, whom was complaining about Ruvik cutting into another brain instead of paying attention to him.

   "Well excuse meee, I just want to talk to my boyfriend. But he seems too busy with cutting open sometimes brain." Sebastian says, obviously trying to bother Ruvik. "My own boyfriend, not paying attention to me, like a-"

   "Watch your mouth, Sebastian. I am not in the mood for your stupidity." Ruvik says, pointing a slender ice pick at Sebastian's head. Grumbling, Sebastian shuts up, allowing Ruvik to get back to his work.

   "I was going to say asshole before you so rudely interrupted me." Sebastian says, his voice full of sass.

   Ruvik slams his hands down onto his work table. Some of his stuff jumps a inch in the air. "I. Said. Quiet." Ruvik says, standing up and walking over towards Sebastian, who at that point, knows he fucked up. "If you would just listen to me for once."

   Ruvik pushes back Sebastian's chair, to the point of the top rail is pressed against the wall. Ruvik leans his head close to Sebastian's, his eyes filled with annoyance and anger.

   But then, Ruvik smiles. "I could never hurt you, Seb." He says, leaving forwards and kissing Sebastian softly.

   Sebastian sighs in relief, but kisses back. Ruvik let's go of the chair, allowing it to stand on all four legs; only to climb onto Sebastian's lap.

   Grinding against Ruvik; he groans, staring to get hard. Ruvik mumbles something into Sebastian's ear, but Sebastian didn't understand at all.

   Ruvik's hands crawl their way down onto Sebastian's chest, groaning as he slowly unbuttons Sebastian's shirt. Sebastian assists in stripping, then moves to stripping away Ruvik's robe.

   Ruvik quickly shuffles out of his robe, his tattered pants soon following. Ruvik blushes, pressing his face into Sebastian's neck. Sebastian chuckles, his hands holding onto Ruvik's arse.

   Ruvik's hands shake as they move downwards to fumble with Sebastian's belt buckle.

   "Let me help you with that." Sebastian whispers into Ruvik's ear. With that, Sebastian strips off his pants along with his underwear. Ruvik looks away, blushing; but Sebastian only chuckles and licking his fingers.

   Ruvik waits for Sebastian to get done, slightly grinding against Sebastian's manhood. Finally after what feels like forever, Sebastian lowers his hand down to Ruvik's hole.

   "Ready?" Sebastian asks, wanting to be careful. Ruvik nods, shaking. Sebastian nods back, kisses Ruvik's forehead, and presses his middle finger into Ruvik's tight opening.

   Ruvik whimpers, but pushes his hips down onto Sebastian's fingers. Sebastian chuckles at Ruvik's neediness and presses another finger in. Ruvik crys out, leaning his head back and biting his lip.

   Sebastian looks at Ruvik, studying him to make sure he's okay. As soon as Ruvik nods for Sebastian to keep going, only then Sebastian starts playing with Ruvik.

   Ruvik groans, leaning forwards and nuzzling Sebastian's neck. Sebastian looks at Ruvik, but continues fingering Ruvik. After a minute of that, Sebastian pulls his fingers out and pulls Ruvik up onto his lap a little better then he was before.

   Sebastian holds his own manhood, pointing it at Ruvik's hole. Slowly, Ruvik lowers himself into Sebastian groaning. Sebastian moans, kissing Ruvik and having his hips.

   As soon as Sebastian is fully sheathed in Ruvik, then he starts moving Ruvik's hips. He raises Ruvik slightly, only to press him back down. He repeats it, aiming for Ruvik's prostate.

   Ruvik crys out in pleasure, signaling that Sebastian found what he was looking for. He grins and rubs against the other's prostate, earning more groans as a reward.

   Ruvik slams himself down onto Sebastian, closing his eyes in pleasure. Ruvik's member twitches only to have sperm come out, covering Sebastian's upper chest. Ruvik groans, pressing his face into Sebastian's chest, embarrassed.

   With all the tight walls around Sebastian, he can't take it anymore. Soon he copies Ruvik.

   Groaning, Sebastian pulls out of Ruvik, who whines. Ruvik sits on top of Sebastian, huffing in exhaustion.

   "That was... Exquisite." Ruvik nibbles at Sebastian's neck.

   Sebastian chuckles and looks at Ruvik. "Maybe I shouldn't watch my mouth from now on." With that, Ruvik blushes.