Succubus summoning... could this thing actually pull a demon from the void? If so, why did Hazuki fail earlier? Kaede and Rin were bewildered. They knew Alex's capabilities were beyond human, but Hazuki was just a normal girl who knew nothing of superpowers or the occult.
Was there some hidden catch? Rin asked him directly.
"Why didn't she succeed? The reason is simple: her mental strength didn't meet the threshold," Alex explained meaningfully as he laid out the ritual circle on the ground. "In layman's terms, her [Intelligence] stat was too low. The moment I laid eyes on this black book, I felt the unique energy fluctuations coming from it."
"It requires someone with immense spiritual power to even perceive it. To use it, one must meet the criteria: a high enough [Intelligence] stat, the correct ritual, a medium, and the incantation. All are essential. Everything in this book is real, but a normal human will never be able to summon a demon."
As he finished speaking, the black-haired boy looked up. The sunlight draped over him like a radiant golden robe, making him look like a priest or an ancient magus in the sisters' eyes.
Except this "priest" was about to summon a devil.
"However," Alex chuckled, meeting Rin's calm gaze with a playful glint in his eyes, "ordinary people can't use it, but you're an exception, Rin. Your [Intelligence] is already quite good. If we keep increasing it... once it hits around 20, you should be able to perform this ritual yourself."
Twenty points.
Rin's eyes flickered. She knew Alex had a way of quantifying their abilities. She also knew that her increased strength and stamina were direct results of their frequent, intense sex.
"Wait! Why can Rin use it? What are stats?" Kaede asked, completely lost.
"Stats are just a numerical way of looking at physical and mental fitness. Rin can use the ritual because her stats are high enough. Yours aren't, Kaede, so you can't."
Alex gave a wicked grin. "I know what you're thinking. Rin, give your sister a demonstration."
A demonstration?
The next second, Kaede watched in a daze as her sister walked into the kitchen, gripped the heavy wooden cabinet, and lifted the entire thing off the floor with ease. It wasn't just about moving it; any grown man could do that, but her sister...
When did Kaede's sister become so strong?
"Alex, what are my current numbers?" Rin asked. She was well aware of her body's changes. Every time she fucked Alex, she felt herself becoming more refined, stronger. Her body was no longer the frail thing it used to be.
"Over 10. You're already stronger than the average adult male," Alex turned to the stunned Kaede. "By the way, Kaede, your mental stat is only 5. You're a total scrub. Heheh."
Actually, it was specifically her [Intelligence] that was a 5, meaning her spiritual power was low. However, Kaede was athletic; her [Vitality] was a 9, which surprised Alex.
"Why am I only a 5 while Rin is over 10? That's impossible!" It wasn't that she wanted to compete with her sister, but the gap was demoralizing.
"It's not just me. Yui and the others are just as strong," Rin said, her voice like a still pond. "It is power bestowed upon us by Alex."
Bestowed power? What did that mean?
"It means sex, Kaede. You didn't think I was dragging the girls into the clubroom to fuck just for the pleasure, did you?" Alex teased. Although, it was extremely pleasurable. "My 'essence' helps them grow stronger. I wouldn't be able to rest easy if I didn't give the women I care about the power to protect themselves in this world."
So... that's why? Rin never told me! Alex's cum... Kaede's face flushed bright red. How much cum had he pumped into Rin? And what about the other girls?
Her head was spinning. It was a shameful, maddening reality, yet she couldn't help but feel a tiny pang of envy toward her sister.
Rin looked at her silent sister. She knew Kaede was too proud to admit she wanted in. She clearly liked Alex, but she'd never say it. If Alex doesn't take the lead, she'll never take that step. I suppose I'll have to help. Maybe the summer training camp will be the chance to finally break her down.
While Rin plotted, Alex began the long-awaited summoning.
"Eromanga... H... Erotic Succubus..."
He held the book and recited the incantation, his massive spiritual power swirling within him before being sucked into the ritual circle. His mental energy acted as the fuel, igniting the chalk lines. The magic circle began to glow with a brilliant blue light.
Kaede and Rin sat nearby, half-eaten watermelons in their laps, their mouths agape.
The supernatural phenomenon manifested in broad daylight. The blue light intensified. If it were night, it would have been visible for miles.
"It's really happening!"
"Is the demon coming?"
The twins clung to each other, shivering. It wasn't just fear; it was the invisible pressure radiating from the circle that made their hair stand on end.
The wind howled, the energy surged, and a blurry silhouette began to solidify. Just as the tension reached its peak—
"Wait! Wait, wait, wait—hold on!"
A panicked voice erupted from the center of the circle, instantly shattering the mystical atmosphere.
"Let me change! I'm not ready yet—!"
"Who the hell summons a succubus in the middle of the day? Wait... someone actually succeeded? How is that possible?!"
The voice was feminine, sultry, and held a unique charm that could make a man's bones go soft. As the light faded, the figure was fully revealed.
She had deep, enchanting violet eyes, shoulder-length black hair, and the face of a goddess. Small bat-like horns curved from her head, proving she wasn't human. Her outfit was outrageously sexy, barely covering anything.
Her waist, thighs, shoulders, heavy breasts, and stomach... vast expanses of creamy white skin were exposed to the sun. A slender tail tipped with a pink heart flicked behind her, radiating an aura of pure lust. She was a walking aphrodisiac.
Kaede and Rin stared. This was it. A demon. A succubus.
But... why was she wearing a half-fastened kitchen apron around her waist?