My wife’s older sister—my sister-in-law—was named Lily. She was breathtakingly beautiful: petite in stature but possessed a lush, voluptuous figure. Having already borne a child, her breasts had grown exceptionally large and heavy, and her hips were incredibly shapely. Every time my eyes landed on her, my manhood would stir uncontrollably. I wanted to ravish her so desperately, but the opportunity had always eluded me.

One day, when I returned home, I found Lily in my house holding her baby. It turned out she had argued with her husband and had come to seek solace from her sister. Today, Lily was wearing a semi-transparent white blouse; the dark lace of her bra peeked through the fabric, the contrast of black against white making her ample breasts look even more massive. As she moved, her heavy breasts swayed and trembled, looking as though they might spill out of her top at any moment. She wore a pair of black casual jeans that clung tightly to her curves, accentuating the magnificent swell of her hips.

After my wife offered some comfort, she headed off to work, leaving only me, Lily, and the baby in the house. Holding her child awkwardly, Lily gave me a shy, embarrassed smile. "I'm so sorry to trouble you both," she murmured.

"It's no trouble at all," I replied, "we're family." In truth, my heart was racing with excitement. Fearing the awkwardness of being alone with her, I told her I had some errands to run downstairs. I saw her let out a quiet sigh of relief as she whispered, "Then come back soon."

I didn't actually go far; I simply wandered around downstairs. About an hour later, I returned and unlocked the door. When I stepped inside, I found Lily had fallen asleep while cradling her baby. Watching her sleep so peacefully, her large breasts rising and falling with her rhythmic breathing, my manhood stood erect once again.

I quietly locked the door and knelt beside her. My desire was becoming impossible to suppress. With trembling hands, I reached toward her upper body, watching her face intently as I began to undo the buttons of her blouse.

The first button finally gave way, revealing the black bra and the swell of her breasts, which seemed too large for the lace to contain. Perhaps because she was so exhausted, Lily didn't notice my movements. Emboldened by my first success, I continued gently, unbuttoning the rest of her shirt. She looked even more seductive now, her voluptuous figure fully revealed. I couldn't hold back any longer; I had to have her.

Since she was wearing jeans, they were difficult to remove. I began to slowly loosen her waistband. Just as I started sliding the denim down her hips, Lily startled awake. Her eyes snapped open, and she gasped in terror when she saw me undressing her. A small cry escaped her lips, but I quickly pressed my hand over her mouth to stifle the sound. The usually gentle Lily began to struggle with all her might, but as she fought to break free, I realized she was almost too strong. Panicked, I whispered, "Lily, don't move! You'll wake the baby. Wouldn't you be embarrassed if he saw his mother doing this?"

But she wouldn't listen, continuing her frantic resistance. I leaned in closer and hissed, "Go ahead, scream. The soundproofing in this building is terrible. If the neighbors hear you, think of how you'll face people tomorrow!"

At that, she fell silent, though her body still trembled with resistance. Losing all patience, I grabbed both of her hands and pinned them above her head. With my free hand, I tugged at her jeans; her own struggling actually helped me slide them down her legs. Soon, her pink lace panties were revealed. Driven by a sudden frenzy, I stripped away her bra and her panties in one swift motion. Now completely naked, Lily fell still, lying on the bed and weeping silently.

I hurriedly stripped off my own clothes and climbed on top of her. Because she had been a mother, her breasts were incredibly full, her nipples darkened and ripe. The moment my hands cupped her heavy breasts, I felt her entire body shudder violently. As I passionately caressed her bosom, I began to rub my cock against her mound, sliding it back and forth against her slit. After a long time, she still hadn't produced any lubrication. Feeling a pang of disappointment, realizing she was a virtuous woman, I decided there was only one way to proceed: I had to take her by force.

My aching manhood could wait no longer. I spread her legs wide, seeing that her folds were still tightly closed. Grabbing my cock, I aimed it at her opening and thrust hard. To my surprise, despite having given birth, she was incredibly tight. The friction felt scorching against my glans, and Lily let out a pained cry.

"Ahhh... it hurts!"

I pulled back and began to push in slowly, inch by inch. She was so tight, yet the sensation was exquisite. Because of the intensity, I nearly climaxed instantly, but I forced myself to maintain control. Finally, when I was buried deep inside her, I paused. Lily began to cry even harder, though she kept her voice low—half to avoid waking the baby, and half to avoid the neighbors.

Her tearful, distressed beauty only fueled my lust. I pulled out sharply and then plunged back in with a heavy thrust. Caught off guard by the sudden impact, she let out a sharp "Ah!" and cast a resentful, pleading look at me. This only excited me more. I began to pump into her feverishly. With every thrust, Lily let out soft, rhythmic moans: "Ah... ahhh... ah!"

She still wasn't wet, making the friction a strenuous but incredibly stimulating task. It was a primal, satisfying sensation.

After about two hundred thrusts, exhaustion began to set in. I collapsed onto her, letting her massive breasts cushion my weight. It felt heavenly. My hips continued to move in slow, rhythmic pulses. Lily had stopped crying and was merely whimpering softly. Suddenly, when I pulled out, the pink flesh of her inner labia was pulled slightly outward with the movement. Not knowing what was happening, she let out a startled "Ah!" and quickly averted her eyes. I sat up and whispered, "Lily, be a good girl. Turn over and lie on your stomach." She didn't speak or move, so I had to gently roll her over myself. Fortunately, she didn't resist much, or the task would have been much harder.

Lying on her stomach, her figure was even more intoxicating. Her already ample buttocks looked even more massive as they trembled from the exertion. As I kneaded her flesh, I teased, "Lily, with hips this wide, pounding you from behind is going to feel amazing." Her face flushed a deep crimson, and she instinctively squeezed her cheeks together. That unconscious movement drove me wild with lust. I lunged over her, lining my cock up with her entrance and driving it home with a forceful thrust. Because of the initial "opening" from before, she was much easier to enter this time. It felt incredible—her soft, heavy buttocks cushioned every impact, the flesh jiggling with every lunge.

As we merged in a primal rhythm, Lily’s consciousness began to blur. She started to relax her defenses, letting out soft, melodic cries of "Ahhh... ahhh..."

With every thrust, her hips bucked slightly, as if she were instinctively helping me find her depth. "Lily, does it feel good?" I whispered. She didn't turn her head, murmuring, "Don't talk... just finish quickly. I'm afraid the baby will wake up."

"Alright, alright," I promised. "I'll be fast." She gave a small, grateful nod. "But you have to cooperate," I added. "Let me hear how it feels."

She blushed even deeper. "Fine... actually, I wanted to scream, but I was afraid you'd think I was a slut."

I began to drive into her with renewed vigor. Lily began to moan more audibly, "Ahhh... it feels so intense..."

"How intense?" I asked, punctuating the question with several hard, punishing thrusts.

"Ohhh... ahhh... I don't know! I've never felt anything like this. It's so strange!"

"Is that so? Did your husband never make you feel this way?"

She panted heavily, "No... this feeling is so wonderful. It's so stimulating... so intense... and so new... ahhh!" I knew the novelty came from the sheer roughness of my passion. Deep down, a woman often craves to be taken with a certain primal ferocity; she just rarely dares to admit it.

"Lily... God, I love you," I groaned, thrusting harder. "I've wanted to do this to you for so long!"

"Really? You're so wicked..." she sobbed softly. "I was so scared... I never thought this would happen... oh, how will I ever look at people again?"

"It doesn't matter. As long as we don't tell, no one will ever know."

"Sigh... I suppose so. I'm ruined because of you... ahhh! Ahhh! It's too much!" The room was filled with the sound of her cries and the rhythmic, wet slapping of our bodies colliding.

After several hundred more thrusts, the end was near. "Lily... Lily...!"

"What is it?" she whispered breathlessly.

"I'm going to come! It's too good... you are a natural temptress!"

"Ahhh! Don't! Don't come inside me! What if...?"

"What if what?"

"What if... what if I get pregnant with your baby? Ahhh!"

"Too late! I'm coming inside you!"

As the words left my lips, her vaginal muscles began to contract rhythmically. The sensation was indescribable; it felt as though my soul was ascending to heaven.

I hammered into her one last time. Lily seemed to lose all restraint, forgetting the sleeping child beside her. She cried out loudly, "Ahhh! It's too much! It's so intense! Ahhh!" My muscles tightened, and with one final, deep lunge, I buried myself to the hilt and froze. My hips convulsed as a flood of semen surged into her womb. The heat of it made her scream, "Ahhh! It feels so good! There's so much... oh, it's killing me! Ahhh!"

Finally, the climax subsided. I lay heavily on top of her, savoring the warmth of her lush body. My cock continued to throb inside her. Lily was spent, gasping for air, her skin flushed a deep rose and appearing almost translucent from the sheer intensity of the stimulation. After a few more moments of caressing her breasts, I lazily sat up and found some tissues to clean myself. I saw a thick, white liquid leaking from her; knowing it was my seed, a thought crossed my mind: *I wonder if she'll get pregnant.*

I handed her some tissue, and she quickly crouched down, pressing the paper against her opening to catch the overflow, even shifting her hips to ensure every last drop was collected. A moment later, she hurried to the bathroom to wash herself thoroughly. She was clearly terrified of conception.

Silence returned to the room. We dressed in a quiet, heavy atmosphere. Lily barely spoke a word to me, her face remaining a permanent shade of crimson. Seeing her so demure and feminine made me want to take her all over again.

When my wife returned from work, Lily seemed incredibly restless and unnatural. She finished her meal in a hurry and rushed home. My wife, fortunately, didn't suspect a thing. But as for me, all in my heart was the hope that Lily would come back. I knew then that I would have to take her again.