In truth, Sirius can think of other ways to have Kieren inside him, ways he knows aren't possible but that he can't help wanting. He tries to shove those thoughts aside, tries to focus only on the delicious press of Kieren's clever fingers as he nods, letting out another bright whimper as Kieren reaches beneath Sirius with his other hand, fingers tangling with his own where they're curled around himself.

"Bloody--" he grunts, giving into it then, his face pressed into the pillow. His words melt into a murmur, a repetitive, "Yes, yes, fuck yes. Kieren."