Jonathon snorted softly, but he was too focused to respond properly. I contented myself with a slow exploration through the thin fabric, my own scientific study of the little ways he tensed and twitched as I groped him. As he sat up, I assumed I'd won the battle easily, but he only twisted to his right to make more notes.
"What are you working on?" I asked, now with a good grip of his length in one hand, the other holding and massaging his balls.
Jonathon leaned back against me, my nose tucked into the nape of his neck.
"I'm studying blood samples from a collection of monsters. I have over twenty samples, but I seem to be discovering a pattern of four."
"Four what?" He was growing thicker in my hands, leaning back into my chest to offer me more ease.
"I'm not sure yet. Four reactions. As if…" Jonathon let out a heavy sigh and his hips bucked up into my touch. "Do you know…I think I might need—"
I helped myself to the fasten of his trousers and Jonathon grunted, ink-stained hands helping pull the fabric out of the way. His flesh was warm and soft in my grip, a little bead of arousal ready at his tip. I worked him slowly, hiding my grin against his shoulders as he sagged into my arms.
"Thank you, darling," he breathed out in a ragged whisper.
"Tell me about your reactions."
"My—? I-uhn—" His hips bucked again as I stroked him. "I feel quite hot and jumpy."
I giggled. My mission was accomplished. "I meant your scientific reactions, actually."
"Oh. Ohhh, Esther, I—" Jonathon cleared his throat, sliding his hips forward for my ease. "It's a series of tests. It seems there are biological similarities…" He trailed off as I circled my fingers and twisted around the head of his cock. When I stroked down to the root of him he sucked in a sudden breath. "Similarities between certain types of monsters. I expected to find them in various fae species, but I found them in unlikely places as well, such as demons and o-ohh-orcs," he managed, now fucking himself in my tight grip.
"That is interesting, then?"
"It would be if—fuck, fuck, I'm close and I'd rather not—"
I loosened my grip, moved back to playing with his balls and stroking his base.
Jonathon sighed. "It's interesting if it means there are deeper biological roots between some monsters. If succubi and vampires and lamia might have common genes."
I thought of how Auguste had described the pride and hierarchy amongst monsters. "What will they think of this?"
Jonathon huffed out a laugh, reaching down and clasping my hand in his, speeding up my stroking. "That I'm not sure of. Some will likely take issue, and I don't yet know what it might lead to. But monsters are twice as superstitious and gullible to myth as humans. I prefer science because it is honest. Most of the time."
I kissed his throat and he sighed, patting the back of my hand.
"He's impatient for you. I'll have proper time with you tonight, but would you mind now—"
I set to my work, Jonathon's breath hitching as my practiced hands squeezed and stroked, twisted and pulled. He groaned sweetly for me, tipping his head to the side to offer his throat for more kisses. All my gentlemen were generous with their praise, even when it was simply their ragged breaths racing toward release, and there was something wonderfully fragile about Jonathon's voice during pleasure.
His cock twitched and jumped in my grip, release fast approaching, and I squirmed two fingers down from his sac to stuff them between his tightly clenched cheeks, pressing to his hole. Jonathon bellowed and arched in my arms. I nipped at his throat, holding him in place as if I were Auguste helping myself to a bite of him. He shuddered and bucked in my embrace, sticky heat spilling over my hands, splashing up and onto the counter.
"Damn! The samples," Jonathon gasped out, but he didn't stop working himself in my grip and the words fell into a long satisfied note.
"Sorry," I said, trying to fight a laugh.
"It's fine," he grunted, his voice going thick. "Done with them, mostly."
The words were shortening, growing rough, and Jonathon's body was flexing in my arms.
"How long has it been since you let him out?" I asked, unwrapping myself from his back.
"Too long," Mr. Tanner bit out through Jonathon's lips.
I grinned and backed up to make room for my monster.
Jonathon and Mr. Tanner didn't usually like for me to watch their transformation, but they were too impatient now. It was an ugly business, and the sounds they made were equal parts relief and discomfort. I stared as long as I could at the twisting of muscles and the popping of bones, until I found myself wincing in sympathy and glancing down to the floor.