The wedding-themed love hotel room was now a mess, the remnants of a night of lust and betrayal.
The once-clean white sheets were stained with smudges of blood and bodily fluids. Yotsuba's traditional Chinese red wedding dress lay carelessly on the floor, partly trampled and wrinkled.
The Western-style white wedding dress that Yotsuba had brought was also in disarray, folded imperfectly at the end of the bed, as if a silent witness to the defilement of the sacred bond of marriage.
The scent of women's perfume mingled with the lingering odors of sweat and desire in the room's stuffy air.
Opening his eyes slowly, Ren felt a slight throbbing in his head. He stared at the unfamiliar hotel room ceiling, a plain white expanse that was definitely not his apartment's.
"Where is this..."
A few moments later, fragments of the previous night's memories began to swirl in his mind.
The mad night he had spent with Uesugi Yotsuba, a married woman who should have been faithful to her husband, flooded back into his consciousness. A faint smirk couldn't be suppressed as Ren recalled how easily he had ensnared the woman under the influence of the Binding Ghost.
Turning his head to the side, Ren saw Yotsuba sleeping soundly beside him. Her red wedding dress had ridden up slightly, revealing the skin of her neck and shoulders covered in red marks from hickeys and a few light slaps, remnants of their passionate games from the night before.
Perhaps due to the slightly chilly room temperature, Yotsuba was curled up like a fetus, seeking warmth beneath the rumpled blanket.
"Ah, that's right. How could I forget this?"
"The percentage of a Campione having offspring is extremely small. We are fundamentally a different species from ordinary humans. So, how will I realize my plan for Yotsuba to bear my child and let Fuutarou raise him without knowing the truth? This will be complicated."
"..."
After thinking for a moment, an idea sprang into his mind. It was a solution whose success wasn't guaranteed, but there was no harm in trying.
"Alright. There's no harm in trying. It might just work."
With that, he began to chant the incantation for the activation of the Divine Authorities Book of Knowledge.
"Tales, Facts, Myths, all are stored within my writings, all secrets gathered in my grasp, nothing can be hidden from my mind."
*BUZZ!*
Instantly, a thick leather-bound book appeared in his hand. Its pages appeared blank, yet Ren knew that the book would record and manifest the knowledge he desired.
*SWISH!*
Focusing his thoughts, Ren willed for all types of ancient and modern magic that had the potential to increase a woman's chances of conceiving.
"There are hundreds of spells... More than I anticipated. Oh well, let's try them all."
Ren directed his palm towards Yotsuba's still-sleeping stomach.
"Fertility's Embrace, The Seed's Awakening, Womb's Blessing, Ovum Genesis... Bla Bla Bla..."
"Ah~"
Yotsuba stirred slightly in her sleep and let out a soft moan.
Inside her womb, her ovum underwent a transformation and was magically enhanced to maximize the chances of fertilization if it encountered sperm.
Slowly, Yotsuba's eyelids fluttered open. She blinked a few times. In a voice hoarse with sleep, she greeted Ren, who was sitting on the edge of the bed.
"Engh... Rokuhara-san... good morning..."
Then, she stretched slightly and unconsciously scratched her crotch.
"Umm... Why does my lower body feel a little itchy..."
"Did you bring the female fertility pills I asked for, Yotsuba?"
"Ah... Yes, I brought them..."
With slow movements, looking still very sleepy, Yotsuba reached for her small bag lying on the floor. After searching for a moment, she found a small bottle containing pink pills and showed it to Ren.
"Drink it."
"Mn."
Yotsuba absolutely obeyed Ren's command, then she swallowed the pill with a little water from the bedside table.
"Want to do it again, Rokuhara-san?"
*SMACK!*
"Yotsuba, have you forgotten the proper way to address me?"
"Forgive my impudence, Master. I know I was wrong. Please punish me, Master. I deserve it."
Yotsuba lowered her head further until her forehead touched the floor. Even though her face had just been slapped, not a trace of anger showed on her expression. She remained in the dogeza position, her body lowered as a form of apology.
"Good. You must always be aware of your position, Yotsuba. Don't compare yourself to Itsuki, Masha, and Ai. Your status is far lower than theirs. Besides, your original virginity has already been claimed by your husband, Fuutarou. All you gave me was false virginity, an illusion you obtained through a medical procedure. Never forget that."
For Ren, Yotsuba was merely a tool for satisfying his lust, a pawn in his cruel game to defile the sanctity of marriage.
Still in a prostrate position, Yotsuba humbled herself further.
"Forgive me, Master. I am lowly and worthless. I am just a dirty slut who dared to forget her place. I will do anything Master commands to atone for my mistake. Punish me as Master pleases. I deserve every punishment Master gives me."
"Please don't discard me, Master. I beg you..."
Feeling satisfied with Yotsuba's absolute obedience, a faint smirk returned to Ren's lips.
"Alright. I will get you pregnant."
Yotsuba's eyes lit up at Ren's words. As if it were the greatest gift she had received.
"Really, Master? Please impregnate this lowly body of mine as Master wishes. I will bear children for Master, no matter how many times Master desires. I will be a faithful vessel for Master's seed."
Ren raised one hand, stopping Yotsuba's words. "However, there is a condition. From today onwards, you are not allowed to be intimate with your husband. Not even kissing."
Yotsuba's face paled slightly at the prohibition.
"But... What about Fuutarou? If he asks me to do that, I can't keep refusing with the excuse of menstruation. Especially after he finds out I'm pregnant, even though we've never had sex..."
Ren seemed to have already thought of a solution to that problem.
"Don't worry. I will place a shikigami that is very skilled in illusions by your side. Every time Fuutarou asks you to have sex, the shikigami will create a perfect illusion, as if the two of you have already done it. The touch, the sound, even the sensation... Everything will feel real to him."
Yotsuba fell silent for a moment, processing his explanation. She knew that Ren was a Campione. Without asking further or trying to understand more deeply, Yotsuba lowered her head again.
"I understand, Master. I am willing to follow all of Master's arrangements."
For her at this moment, obedience to Ren was everything, even if it meant living a complicated lie.