"Honey, are you ready yet?!" I called my wife on her mobile phone from the car. She was preparing to take her mother on a two-week trip abroad, so I had rushed home on leave to drive them to the airport. When I reached the mouth of the alley, I gave her a call. Sure enough, she was still in a frantic rush, packing her things, so I spent a little more time waiting.

When she finally emerged, she was accompanied by her mother. Wait—was her younger sister here too?

"Brother-in-law, long time no see!" she greeted me warmly the moment she stepped into the car. Since my wife was too shy to sit in the front passenger seat, the younger sister took the initiative to claim it. It didn't take long for me to notice her outfit—it was quite provocative. She wore an incredibly short mini-skirt, tall boots, and a tiny camisole. It was nearly impossible not to steal glances at her curvaceous figure.

My wife and I had a good relationship, but she had one flaw: she was somewhat averse to sex. Before we married, we had only been intimate twice, and she had been very insistent on keeping it that way. After marriage, while the intensity had lessened, sex often felt like a mere routine to be checked off a list.

As for their bodies, I noticed both sisters were quite well-endowed, possessing large breasts and long, slender legs, though the sister was perhaps less classically beautiful than her elder sibling. However, in terms of style, the younger sister certainly knew how to catch a man's eye.

After seeing my wife and mother-in-law off at the airport, the sister and I walked back to the parking lot together. Once we were settled in the car, I asked, "Mia, where do you want to go? Your brother-in-law can drive you."

"Really?! Then I want to go to the seaside to see the view!"

I checked my watch; it was just past three in the afternoon. That was fine. I drove the car toward the coast near Dayuan. Since this was my hometown, the area was very familiar to me. I drove to a secluded spot, parked the car, and walked a short distance to a small, private stretch of coastline that I frequented.

"Wow! Brother-in-law, how did you find such a beautiful place?!" Mia cried out in excitement. The afternoon sun spilled across the sand, turning the entire beach into a shimmering expanse of gold. It was breathtaking. I smiled at her, and as she stood facing the sunlight, she looked exceptionally stunning.

She walked toward me, and in a moment of feigned clumsiness, she stumbled into my arms. Her hand landed perfectly against my crotch. Because I had been stealing glances at her body all afternoon, my cock was already semi-erect.

"Brother-in-law, your sister told me... your 'treasure' is quite impressive," she said. After letting me help her steady herself, she sat down beside me, and her very first question was that.

"Your sister told you?" I asked, genuinely curious. It was hard to imagine my wife discussing my sexual prowess with her own sister! Mia nodded, her hand sliding once more between my thighs. She began to stroke me through my trousers with practiced skill. My cock responded obediently, straining upward. A playful, teasing glint appeared in her eyes as she quickly pulled down my zipper. My manhood, straining against my underwear like a small tent, began to peek out from the opening of my slacks.

"Hey, what are you doing?" Though the words left my mouth, there wasn't a hint of intention to stop her.

"Nothing much! Just helping your sister inspect just how amazing her husband's treasure really is!" she laughed. She continued to pull aside my underwear until my cock finally broke free of its confinement, standing tall and proud!

"Wow! Brother-in-law, yours is quite big!" she exclaimed, looking surprised. In truth, this was a point of pride for me; in terms of size, I was more on the Western scale. Her hands moved to unbuckle my belt, exposing even more of my length. At this point, since I was eager to see what games she intended to play, I made no effort to restrain her.

She reached out and gripped my cock. Even with both palms wrapped around it, a large portion of the shaft and the glans remained exposed. She opened her mouth and took the head inside, her tongue immediately swirling around the sensitive tip. While her mouth worked, one hand began to stroke the shaft while the other toyed with my testicles.

In this seaside setting, under the setting sun, with a gorgeous girl performing oral sex on me... ah, life was good!

She was incredibly skilled, using a variety of techniques—sucking, licking, and light biting—to tease and stimulate me. However, these were merely building the tension; she hadn't quite brought me to the point of climax yet.

After working on me for a long time and seeing that I wasn't ready to erupt, she smiled and pulled her mouth away, though her hand continued to stroke me rapidly. "It seems your sister wasn't lying. You really are amazing!"

"You've made me feel wonderful," I said, my voice husky. "Now, isn't it time I made you feel good too?"

She stood up, her eyes bright. "And how exactly do you plan to do that?"

"That depends on how you want to feel!" I reached out and pulled her into my embrace, cupping one of her breasts with my hand. "Is this okay?"

She giggled. "Brother-in-law, why don't we just go home and really make each other feel good?"

I nodded, led her back to the car, and drove home with frantic speed.

The moment we entered my bedroom, she pounced on me, throwing her arms around my neck and showering me with kisses. As we kissed, we worked at each other's clothes. She was incredibly proactive, helping me strip until I was completely naked.

Then, she began to undress herself. When she was down to her final piece of lace, she turned her back to me, gesturing for me to slide the last bit of fabric down. Naturally, I was more than happy to oblige.

Finally, we stood naked and entwined, exploring each other's bodies before descending into oral play. My tongue and fingers worked skillfully around her clitoris and labia. Once her vagina was slick and wet, I slid my middle finger inside, followed by a second. Her reactions became intense; she could no longer focus on performing oral sex on me, so the stimulation became a one-sided affair of me pleasuring her.

I sat up and helped her lie back on the bed. She knew exactly what was coming next. She braced herself on her toes and lifted her hips slightly, waiting for my entry.

I pressed the glans against her opening and pushed forward with a gentle force. She parted easily, and as I slid deeper, my cock glided smoothly into her heat until the head pressed firmly against her cervix.

"Ah... ah... ahhh... Brother-in-law... your... cock... is so... big! You're making me... feel so good! Push deeper... use more force... fuck me! Fuck my little hole to pieces! Brother-in-law, lower your body... let me hold you... oh, it's so good!"

Her vagina gripped my cock tightly, sending waves of pleasure through me. As she clung to me, her eyes squeezed shut, her face contorted in a mask of pure, unadulterated ecstasy. If only her older sister could make a face like that! My primal instincts and desire to conquer were ignited; I began to thrust with wild, sweeping motions, driving her into a series of continuous, screaming orgasms.

After her third climax, I finally reached my limit and erupted deep inside her. We both lay on the bed, panting heavily. Just then, the phone rang. I reached out to answer it, and my wife's voice came through the receiver:

"Honey, my sister is quite something, isn't she?"

I had no idea how to answer.