The Pinnacle of Ecstasy
This was unmistakably the peak of ecstasy—an overwhelming rush of release surging through my body. The sheer, unbelievable thrill of having pumped my seed straight into Mom’s womb, the very place where I was born, only amplified the sensation. So this is what it feels like to cum inside.
Compared to the sheer excitement of having sex with Mom, the satisfaction of a creampie was in no way inferior. I was amazed that simply filling her womb with my cum could bring me such intense joy. It went far beyond merely not wanting to pull out.
“Ah, son… You… You came inside me?”
From here on, acting was crucial. Still riding the high, I feigned surprise and answered, “…Yeah. You told me to, Mom.”
“Haaah— Of course you should’ve done it outside.”
“…I see. I thought you meant it was safe today, so I could finish inside without worry. Sorry. I must’ve misunderstood what you said.”
To avoid breaking the trust between us, I claimed I had simply misinterpreted her words. It was a lie, of course, but I felt no guilt. The happiness and benefits I gained were far too great to leave room for remorse.
Mom is someone who wants my happiness more than anyone. She’ll understand.
Mom had always wished for her son’s happiness, and I convinced myself that she would accept this as well—after all, I was experiencing a level of bliss I could hardly surpass.
“Be more careful from now on, son.”
“Yeah. I will, Mom.”
My mother, Oh Mi-jin, sometimes showed a remarkably bold side. Rather than dwelling on self-reproach for what had already happened, she had a forward-looking personality that sought hope and new challenges. That trait was on full display now. Watching her end the matter with a simple warning only reinforced my belief that cumming inside her had been the right choice.
Pop. I pulled my cock out of Mom’s pussy. As the thick shaft that had stretched her hole slid free, my cum began to trickle out from her entrance. I stared blankly at the sight of my own semen dripping from her pussy onto the floor.
Whoa… This is insane.
My son’s cum leaking out of Mom’s pussy… The feeling was indescribably strange, and a wave of intense arousal surged through me.
If she gets pregnant from this, the baby would be both my sibling and my child.
I found myself lost in the fantasy of impregnating Mom. The image of her belly swelling with my child flashed through my mind. Honestly, the thought of it being my child felt far stronger than any sense of it being a sibling. Even if the child came from impregnating Mom, the core truth was that it would be my offspring. “Sibling” was technically correct, but it felt like a weaker description.
Am I really that messed up? I can’t explain it any other way.
After cumming inside her, the first thing that came to mind was a pregnant Mom—Mom carrying my child. I knew from everything I had been taught about morality and ethics that this was wrong, yet I was completely immersed in the fantasy. And those thoughts… made me happy.
I wanted to get Mom pregnant. And of course, it had to be with my cum, my baby. The idea kept circling in my head.
“Mom.”
“What is it?”
“Is today a safe day?”
If it had been her fertile period, Mom would have reached inside herself to scrape the cum out. Meeting her eyes as she rested, I asked whether we were safe from pregnancy.
“Yeah. It’s safe. At least there’s that, right?”
“…Yeah. That’s… a relief.”
I said it was a relief, but somewhere deep down, I felt strangely hollow.
“When’s your next period, Mom? I want to know your cycle.”
A son asking about his mother’s period wasn’t normal. But we were inside the Tower, and we had already crossed the line into sex, so it didn’t feel strange. Mom seemed to share the same thought and answered right away.
“Mom’s cycle is like clockwork—exactly twenty-eight days. In three days I’ll be in my fertile window, so we’ll have to be extra careful. Listen to me, saying all this to my own son…”
I shook my head. “No, this is really important. If we’re in a rush, it might be hard to pull out in time.”
The Tower was full of variables; we couldn’t predict most situations. Mom nodded in agreement.
“I’ll let you know in advance when Mom’s dangerous days are, son.”
“Thanks, Mom. Now let’s check how long the effects of sex last.”
I wanted to do it again right away, but I had no excuse. Since I had already told Mom I wanted to understand the exact duration of the effect, I decided to test it properly. I found a wooden stick and set it in the sunlight to make a sundial.
“From now on, I’ll record the time while checking the effects.”
To test it, I sliced my arm with the axe. Thanks to Warrior Mode, no blood flowed. My arm just turned red and my HP dropped slightly—that was the full extent of the damage.
“Son, doesn’t that hurt?”
“It stings a little, but it’s nothing. I’ll keep cutting myself while watching the sundial. I need to see how fast I heal.”
“…Alright. Do that, son. Sorry, but Mom can’t watch you hurt yourself.”
“Got it. Rest up. I’ll handle this part alone.”
“Thank you… and I’m sorry, son.”
After sending Mom away, I kept inflicting wounds on myself to test the effect. Time passed, and the first results came in.
“Mom, sex keeps the effect going for about six hours.”
Without a proper clock it wasn’t exact, but that was the rough estimate. By tracking wound recovery and the subtle changes in my body’s rhythm, I reached a fairly accurate conclusion.
“I see. You worked hard, son.”
“It’s fine, Mom. Information is important. We need to do more.”
“More?”
“Yeah. There’s still something left to check.”
“I-I see.”
Confirming the duration of sex’s effect meant we would have to have sex again. Mom looked away, embarrassed, gazing off into the distance. I found the shy expression on her face strangely appealing.
“Let’s do it again, Mom.”
“Y-Yeah… We should. Mom will take her panties off.”
Mom started to remove her panties and lie down, but I caught her hand on the waistband.
“Why? Do you have something to say?”
The time had come to say what I had been imagining. I gave myself a mental reminder to stay calm and hide my excitement, then spoke evenly.
“I saw on a broadcast that most animals do it from behind.”
“F-From behind? W-Why do they do that?”
Mom assumed there was a reason and asked about it.
“They say it lets them watch their surroundings in dangerous places, and they can disengage at any moment to react immediately. That’s why they use that position.”
I recited the explanation I had prepared. Mom thought for a moment, then nodded. Even to her, it sounded reasonable, so she couldn’t argue.
“So that’s why animals do it that way.”
“Yeah! So… let’s do it from behind too, Mom.”
I suggested the most efficient mating position in the wild—doggy style.
“If it’s necessary, then we should. Alright, son.”
Mom agreed. I took her hand and led her over to a large tree. Knowing this was practice as well as sex, she followed obediently without complaint. I gently pressed on her stomach to make her bend over.
“If it’s hard to keep your balance, lean on the tree. Got it?”
“…Yeah. I will, son.”
Mom accepted my request without refusal. Once she was leaning against the tree, I moved behind her.
Feels like I already came just from the mood.
Mom’s large, firm ass was thrust toward me. Standing behind her, I was so aroused I didn’t bother hiding it—after all, in this position she couldn’t see my face. I reached for the axe mark on her body.
“Hnn.”
While gently tracing the mark with my index finger, I grabbed the side of her panties and pulled so the waistband caught on her hips.
“This is more efficient than taking them off completely, so I’m doing it this way, Mom.”
I kindly explained why I wasn’t removing her panties.
“Son, M-Mom already knows, so you don’t have to explain it like that.”
Mom’s body trembled slightly from embarrassment. I was a good son, but this time I decided to contradict her.
“Mom, in dangerous places, communication is the most important thing. If I assume someone will act a certain way based on my own standards, misunderstandings happen, and if they pile up, they can grow into something unmanageable. I… want to explain and confirm things, even if they seem obvious. Is that weird?”
“Now that I hear it, you’re right. Mom’s sorry for saying something unnecessary. From now on, even if I already know what you’re saying, I’ll listen carefully—so keep explaining like this, son.”
“Yeah. I will, Mom. Thanks for understanding.”
Honestly, watching Mom’s reactions while I explained was enjoyable in itself. I didn’t want to give that up. Still, what I had said was sincere. Misunderstandings born from a lack of communication were all too common between people, and I simply hoped there would be none between Mom and me.
“I’m going to start now, Mom.”
“Go ahead.”
I grabbed her ass with both hands and spread her cheeks apart.
“Hnn.”
I had no memory of directly grabbing Mom’s plump, firm ass like this before. It already felt incredible.
“Whoa—her pussy is soaked.”
Seeing Mom’s pussy from behind in this position felt completely new. The words of admiration slipped out on their own.