Thread by @bkgonly

#bkdk 🔞 somno, symbiote!bkg

katsuki detaches himself to observe deku’s sleeping body.

long, tanned legs clad in thin sleep shorts. mussed up hair and a sliver of skin peeking from where his shirt has ridden up.

katsuki licks his lips at the sight.

he knows deku has an attractive body from years of working out. hell, katsuki thinks he’s more in tune with the nerd’s body than deku himself, and it drives him up the fucking walls. it just didn’t occur to katsuki until much later that this undeniable heat that-

courses through him whenever he thinks about deku for more than three seconds can be classified as pure, unadulterated want.

being one with deku’s body is simply not enough. suddenly, katsuki wants more, wants to drown himself in deku and drink to his heart’s content.

katsuki lets his black tendrils extend until they lay on deku’s left leg. nothing too crazy; just a comfortable pressure that lets katsuki feel the warmth of deku’s skin. slowly, he moves up, up, slipping underneath the hem of deku’s shorts.

katsuki knows deku doesn’t bother to put on any underwear when sleeping but /fuck/ did katsuki get a rush of excitement when he felt smooth skin underneath the fabric of deku’s shorts.

“such a slut and you don’t even know it, stupid deku.”

one sticky appendage prods at the soft skin behind deku’s balls, earning katsuki a soft sigh from the sleeping human below him. pleased, katsuki moves on to deku’s puckered hole.

he gets to work right away; poking and pushing and spreading his essence messily across deku’s skin. the best thing about this is katsuki /knows/ deku is feeling good, can literally feel an onslaught of adrenaline coursing through the nerd’s body just from katsuki’s ministrations

belatedly, katsuki also feels deku waking up, right when he deems him ready to take one slim appendage inside.

“ka—hngg!” deku cries out hoarsely, trying to get away but unconsciously arching towards the source of his pleasure. “wh… what’s hap’ning…?”

“something i should’ve done a long time ago,” katsuki says without any thought, fully focused on the sensation of deku’s walls hugging his sensitive appendage. “fuck deku, you’re so fucking tight. you’re made to take me, aren’t ya?”

deku shudders at his words.

“you like that?” katsuki increases the pace. “like being told how good you are at taking cock, deku?”

“kacchan, i—“ from where katsuki is hovering, he can see the movement of deku’s hips against the mattress. so the dirty fucking nerd /is/ getting off to this.

“feels good… please—more, i’m…!”

deku looks delirious; katsuki knows the slick that he produces has some sort of aphrodisiac properties, but he didn’t know that it would affect deku this much. he flashes a wicked grin as he increases the size of the appendage-

inside deku.

the reaction was instantaneous. deku keens and arches off the bed, coming untouched from just having his tight little hole played with. katsuki has never seen a more beautiful sight.

when deku gets down from his high, katsuki morphs until he’s at a size where he can spoon the nerd from behind.

“kacchan, you—“

“don’t tell me you didn’t enjoy that.”

deku looks at him like katsuki said something funny, and then he had the audacity to fucking /giggle/, slapping katsuki in the process. what the fuck.

“silly, i’ve been waiting for you to do that since forever.”

“…you fucking minx.”

LOL sorry i had to cut that short i was feeling some type of way while writing this :’D hope yall still liked tho heres the start of the thread 🫶🏽

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