Oh yeah, they definitely do!

"So... You gonna fuck her, or not?" Aza asked David eagerly as she watched the two kiss.

"Hey, it's called foreplay!" David yelped as he pulled back from Katara, whose cheeks darkened.

"I don't mind if you want to get started... Master..." Katara nodded as she laid back and spread her thighs apart for him, exposing her glistening sex to his view.

"See? She's pretty impatient for it too!" Aza giggled, eager to see her Master fuck the first member of their little harem.

"...fair enough," he nodded as he began to finger Katara's folds, and made her mewl in pleasure, bucking her hips into his fingers. "I wish Katara would cum when I did, and also, that she was protected from unwanted pregnancy and STDs. Actually, I wish I had full STD immunity, and that anyone I fucked couldn't get pregnant unless we both want it."

As Katara moaned and writhed her hips, Aza beamed in delight, and snapped her fingers, and caused him to feel a tingle in his manhood. "Done, Master! No need to worry about "oopsies" now~!"

David nodded, continuing to stimulate Katara's folds with one hand, and used the other to undo his pants and pull out his erection. Once he was ready, he grabbed Katara's hips and pulled them right to the edge of the bed. "Master... Put it in me..." Katara crooned, and he obliged, plunging into her with a single thrust. "Ahhh!" she gasped as her folds embraced his member.

Holding her waist, he began to fuck her while Aza began to play with her own breasts, cooing at the show. "Wow... This feels great..." David panted, continuing to piston his hips.

Katara gripped the sheets next to her head, her eyes closed as she arched her back, and thrust her own hips against him. "Unh, oh... Master... you're so deep... Please, don't stop!" she pleaded.

He never planned to, speeding up, moaning as he felt the embrace of her vaginal walls around his length. "That's it, good girl..." he coaxed.

She bit her lip and opened her eyes to meet his gaze adoringly. "Thank you, Master, please, make me cum!" she begged.

He pounded into her, their hips producing a smacking sound with each thrust, and he grit his teeth as he rapidly approached release. He could feel it building, building... And then it burst, and with a loud grunt, his seed flowed right into her depths.

"Ungh!" Katara gasped as she arched her back more, her body stiffening as her own peak got her. "Oh... Master... That was so good..." she wheezed as their bodies relaxed, and he slowly pulled out of her. A thin trail of seed mixed with her own fluids dribbled out seconds after his cock exited her.

"Yeah... It was..." he panted, before leaning down to kiss her, a gesture she enthusiastically returned.