"Yes," she heard herself whisper. "Please."
Tonks leaned in and placed a small kiss on her ashole.
Alisa had to suppress a surprised moan.
She backed away, and then, Tonks slid inside Alisa with one smooth thrust.
Alisa gasped, her body tightening around her as she adjusted to the sensation of Tonks' dick filling her up.
"Ah!"
It felt so good—so much better than she expected.
She was full, too full.
"Fuck," Tonks groaned, gripping Alisa's hips as she started moving inside her. "You're so fucking tight."
Alisa moaned something incomprehensible as Tonks' movements increased in pace and she went deeper.
Alisa's body was so sensitive right now—she could feel every inch of Tonks' dick sliding against her insides, every brush of skin on skin.
She could even feel the heat from Tonks' body radiating through her dick.
"That's it," Tonks encouraged, grabbing Alisa's hair and pulling it back, not too hard, slamming her dick inside Alisa.
"AHHH!"
She quickly lost track of time and couldn't comprehend how she managed to stay on all fours with Tonks pumping her huge cock deep inside her ass.
"Ride me, baby," Tonks said suddenly.
It took her a few moments, but Alisa obeyed, rising up onto her knees and slowly sitting on Tonks' dick, making sure to fill her asshole again.
"AHHHH!" she moaned as it filled her up. It was the best feeling she had ever experienced.
The next moment, Alisa started to bounce on Tonks' dick.
She felt so free in this position.
Her hands roamed over her body, feeling the weight of her tits, the curve of her hips. She found herself holding her own dick, which was obviously rock hard.
Alisa couldn't resist and started stroking her dick.
Tonks was grunting every time Alisa went up or down, clearly enjoying the ride just as much as she was. Alisa could tell by the way she was gripping her ass that this was doing something for her, too.
"You like this?" Alisa asked between breaths. "Fucking me like this?"
Tonks didn't answer with words. She just groaned loudly, burying her cock even deeper in Alisa's asshole and started thrusting harder and faster.
Alisa moaned as she felt an orgasm building inside her.
She never realised how good it felt—giving up control.
As the climax hit, Alisa's body tensed up. Her ass clenched tightly around Tonks' dick, trying to milk it for all it was worth. She could feel herself coming, her own orgasm washing over her in waves of bliss as she stroked herself and got her hole filled.
Tonks followed quickly after, grunting loudly as she came inside Alisa, grabbing her ass cheeks hard and thrusting one last time inside her asshole. Her body shook with the force of her release, and she collapsed limply onto the floor, with her cock still inside Alisa's ass.
They both lay there for a moment, panting heavily.
"That was..." Tonks started to say, but trailed off.
"Yeah," Alisa agreed. "So fucking amazing."
Tonks smiled against her back, pulling Alisa closer and nuzzling into her neck.
"You were so good," she said, running a hand up and down Alisa's arm. "I didn't know you could be like this—so wild. So free. It was... hot."
Alisa blushed slightly but smiled back at her.
"Thanks," she said softly. "It was my first time getting fucked in the ass, and I have to say... it was pretty great."
Tonks chuckled, pressing another kiss to Alisa's neck.
"I bet it was," she said.
"You know," Tonks said eventually, propping herself up on one elbow, "we should probably talk about what just happened."
"Do we have to?" Alisa's voice was muffled, still lost somewhere between a dream and reality.
"Kind of, yeah." Tonks poked her in the shoulder. "I just went from frustrated training partner to fucking you in about thirty seconds flat. That's... not exactly normal relationship progression."
Alisa finally turned her head, one eye visible. "Nothing about our relationship is normal."
"Fair point." Tonks flopped back down. "But still. I don't want you to think I'm just using you for sex. Or that I only care about you when I'm horny."
"I don't think that," Alisa said quietly. "You've been nothing but supportive since this started. Even when it's inconvenient, even when it's weird—you're there."
"Because I care about you, you idiot." Tonks turned to face her properly. "Not just as a colleague or a convenient fuck buddy. I actually care about you. As a person."
Something in Alisa's expression softened. "Thank you. I care about you too."
"Good." Tonks smiled.