Impregnate Your Younger Sisters

The success condition for the new quest granted by the developer is to impregnate Sophia and Cordelia. Setting aside concerns about the world's gaze if our sibling pregnancy is discovered, I wonder if it's even biologically ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠possible for a human to become pregnant within two hours. Doesn't it normally take at least a week for sperm to fertilize an egg and implant in the womb?

Then, the memory of my time with Melina suddenly surfaced. Right after acquiring the new trait called Womb Tattoo, the Melina training quest had followed immediately. What if this quest is also linked to the reward from Sophia's quest?

Status Window!

Standing around like an idiot won't help. I need to check something. Even as I hesitate, the quest timer keeps ticking. And my decision to open the status window was the right one.

The first thing that caught my eye was the Potency stat sitting at 59, just one point away from 60, but that wasn't important right now. The new skill at the bottom of the status window was clearly the reward from the previous quest. Its name was Absolute Pregnancy Semen. The description alone was ridiculous.

[Absolute Pregnancy Semen ]

▶ The first ejaculation within 10 minutes after activating the skill will absolutely impregnate the target.

▶ Has no effect on women who are physically incapable of pregnancy.

"Well, that solves the time issue."

The skill's effect was as straightforward as its name. Absolute pregnancy. Use the skill and ejaculate, and the woman gets pregnant. I had no idea how it compressed a week-long process into moments, but I didn't care. Right now, the bigger problem was how to ask Sophia to bear my child—our child.

Just imagining her reaction made my head throb. I must have unconsciously frowned, because the sharp-eyed Sophia asked, "What's wrong? You look like something's bothering you."

Damn it. How do I even say this?

I couldn't exactly blurt out that a being akin to the god who created this world wants us to make a baby together. But there was no time to hesitate.

"After Father's northern expedition force was annihilated, the only people left carrying the Reinhardt name are me, Cordelia, and you, Sophia. You know that, right?"

Sophia gave me a look that said, Why are you stating the obvious now? "So?"

"If we're not careful, the bloodline and traits of the Reinhardts might end with our generation."

The trait representing the Reinhardts, Blessing of Sword Saint Reinhardt, was currently held only by me and Sophia. Cordelia, the other Reinhardt, had not been born with it. Of course, there was a chance her children could inherit it. But the problem was that there was also a chance our children might not.

Sophia sighed. "I know that too. That's why I planned to marry Cordelia off to the most excellent man from the most excellent bloodline once I became head of the family. But why bring this up now?"

I told her my idea, ignoring how casually she had just talked about treating her own sister like breeding stock.

"What if… mixing our blood would make the Reinhardt traits even stronger?"

"..."

Sophia's mouth parted slightly, her eyes going blank. I understood how she felt. She had already endured several absurd events today, but this request was probably the worst. While she was still reeling from being asked by her older brother to bear his child, I shamelessly continued.

"The children born between you and me will lead the North—and the Reinhardt family."

Sophia snapped back to her senses and shot back, crossing her legs tightly as if to protect her womb. "Then just have children with all those other women instead!"

Unlike Cordelia, Sophia still called me by name instead of "brother." But now wasn't the time to worry about such details. I put on a sorrowful expression.

"Was everything ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠you said earlier a lie? That you'd help me? That you'd stand with me for the sake of Reinhardt?"

Sophia raised her voice in protest. "I did promise to help, but still—"

She shook her head. "Giving birth to your sibling's child? No. How would we hide it from everyone? From Mother? From Masha?"

"I don't mind."

The one who answered wasn't me. At the same time, the door burst open without a knock, and a naked Cordelia strode in. Emilia followed behind her, looking anxious. When her eyes met mine, Emilia mouthed an apology. I couldn't blame her. Even Emilia couldn't have stopped Cordelia. Sophia and Cordelia—both women bearing the Reinhardt name—were forces of nature.

Cordelia made no effort to hide her glistening lower body from her sister and brother. With both hands on her slim waist, she spoke to Sophia in a confident voice. "I want to have Arwen's child. I don't care what Mother or anyone else thinks."

"Cordelia? How did you—"

Sophia was flustered to see Cordelia, whom she had assumed was still restrained, burst into the room. She looked back and forth between us, then let out a hollow laugh as realization dawned.

"Don't tell me you two were working together from the start?"

Cordelia admitted it without hesitation. "That's right. I helped Brother to win you over."

"Hah. More like rape than persuasion. Are you satisfied now that you've seen your sister, who hated him, get violated by him?"

Cordelia brushed off Sophia's protest with an indifferent expression. Instead, she countered, "Would you be satisfied if some other man devoured the Reinhardt family while we fight among ourselves?"

"..."

While Sophia was at a loss for words, Cordelia pressed on. "I'll admit it. I used to hate you, Sophia, for treating Brother and me like insects. I was even afraid of you."

"But not anymore."

Dripping fluid onto the floor, Cordelia slowly approached us. "Brother and I will become one and protect our family."

With that mission-filled declaration, Cordelia knelt before me. She took my member in her hand and began stroking it gently. In her eyes, gazing up at me, I could feel her affection for her brother.

Cordelia's caress made Sophia's clumsy footwork seem almost insulting by comparison. Over the past few days, she had received special training from Emilia on how to satisfy her brother. "You like it when I touch here, don't you?"

Cordelia smiled playfully and pressed the tip of her tongue against the frenulum connecting the glans and shaft. The soft yet slightly rough ‍‍‌‌⁠​​⁠‌​​‍​​‍​‌​⁠‍‌‍⁠⁠‌⁠‌‍‌‍‌‌‌‍⁠​‌​‌​‌‍‌‌‌⁠‍​​‌‍⁠‌‌⁠⁠tongue licked the sensitive spot, sending all sensation straight to the tip. A sharp jolt of pleasure. It felt as if both her tongue and my member had been electrified at once.

Thanks to the relentless assault on that spot, my member regained its strength. Cordelia looked at the now-erect shaft with satisfaction, as if admiring a dish she had prepared. Like a chef tasting her cooking, she took it into her mouth in one go. Her wet tongue wrapped around the base, and in an instant, my entire length was swallowed down her throat. The glans pressed against the back of her throat instead of a womb. The sensation of the glans being squeezed by her convulsing throat made me feel like I might burst.

Cordelia sucked with such intensity that it didn't matter whether I was about to climax or not—she seemed determined to leave not a single drop behind. While her mouth worked diligently, her hands weren't idle either. Her left hand gripped my thigh firmly while her right index and middle fingers caressed the sweaty skin of my balls.

Emilia watched Cordelia with a pleased expression—the face of a teacher observing her student's performance. Sophia, however, looked completely bewildered.

"Damn it, becoming one doesn't mean you have to do this!"

Watching her younger sister casually take their half-brother's member into her mouth and bob her head, Sophia cried out. She couldn't understand how Cordelia could caress Arwen so sincerely. Rolling around on the bed and crossing the line between siblings had clearly been her final stand in their contest.

Cordelia ignored Sophia and continued sucking. The wet, obscene sounds of her mouth working on my shaft filled my ears. When the urge to climax reached its peak, Cordelia—somehow sensing I was close—pulled away. "Can't receive my nieces and nephews in my mouth," she muttered, a line so lewd it had to be acknowledged.

In just a few days, the inner succubus within Cordelia had awakened. She turned her dazed face toward Sophia, who was still watching blankly.

"You felt it too, didn't you? That joy when you became one with Brother."

"T-That's..."

As Sophia hesitated, Cordelia gave her a see? look and climbed onto the bed. She grabbed the undersides of her own thighs and spread her legs wide. Between her twitching holes, her secret garden was visible. The motion was as natural as flowing water. The mere mental pleasure of seeing a female before me begging for my genes brought the male within me to the brink of climax.

With a heated breath, Cordelia spoke. "I want to make a baby with you, Brother. Right now."

"Are you sure?"

Cordelia nodded as if there was no need to ask twice. "The baby room reserved just for Brother is ready. So hurry up and fill Cordelia with as many of Brother's children as you want♡"

Baby room reserved just for Brother. That was it. How could I possibly hold back?

"Alright. I'll definitely get you pregnant, Cordelia. And today won't be the end. Your baby room will be mine for life."

At my shameless confession—unbelievable coming from a brother—Cordelia beamed with genuine joy. "I'm so happy♡ Hurry, hurry, give me your cock♡"

To answer her expectations, I activated the skill Absolute Pregnancy Semen in my mind. I didn't feel any particular change, but it didn't matter. Like a starving beast that had found its prey, I lunged at Cordelia. Quest or no quest, if I didn't plant my seed in the female right in front of me, I felt like I would lose my mind.