Basking in the soothing embrace of temperate water as it cleansed his body—marred by perspiration and sundry fluids—Kagura found a moment of repose, only to be struck by a sudden recollection of the "system." After all, it had chimed once before vanishing, leaving him to ponder whether it had been a mere auditory illusion.
No sooner had this thought crossed his mind than Kagura felt his consciousness detach from his corporeal form, drifting into an ethereal void. There, the system's genderless voice once more insinuated itself into his mind.
"Greetings, Lord Kagura. Permit this system to serve you. Our discourse transpires within a timeless abyss; all temporal progression, both within and without your being, remains suspended. Upon conclusion, your consciousness shall seamlessly reintegrate with your essence."
With this elucidation, Kagura affirmed that the prior occurrence was no figment of his imagination, but a tangible reality.
"I comprehend. What capabilities do you possess?"
"The auxiliary system offers two primary functions. First, a daily sign-in: you may summon this system once each day to register your presence, whereupon your physical state shall be instantaneously restored to its zenith—replenishing stamina, vitality, and even assuaging hunger.
The second is 'Bounty Issuance.' When this system detects your desires, it shall proffer a bounty. Should you opt not to pursue it, you may bypass it outright and claim the reward—be it an array of artifacts or abilities—up to thrice daily.
Should you fulfill a bounty, you shall receive a triple-dose elixir of instant stamina and vitality restoration, or a potion enhancing female sensitivity by five percent. There exists no penalty for abstention or omission."
The system's tone bore a hint of entreaty, stirring in Kagura the suspicion that it eagerly anticipated his engagement with these "bounties."
"It sounds tolerable… restoring stamina, vitality, and hunger, you say? I am soon to dine; can the sign-in exclude hunger restoration?"
"Indeed, this system shall endeavor to fulfill your every whim."
"…Very well, then. Let us commence with a sign-in."
"Sign-in successful. Time until next sign-in: 6 hours, 18 minutes, 29 seconds."
Scarcely had the system spoken when Kagura felt the weariness and faint languor from his tryst with Hayasaka Ai dissolve entirely. His spirit burgeoned as though he had luxuriated in a leisurely holiday, awakening refreshed from an untroubled slumber.
Moreover, owing to the "vitality restoration," his manhood—hitherto dormant—rose with the vigor of a morning's first light, standing proud and resolute.
This… was the effect not excessively potent?
Kagura now harbored an ardent desire to seize Hayasaka Ai and ravish her six or sevenfold.
"Does this sign-in not tax one's lifespan?" he queried, recalling tales of narcotic-induced vigor and dreading an untimely demise.
"Rest assured, no function of this system shall imperil your well-being."
"Understood. Well done. You may depart."
Kagura found the system's presence somewhat irksome.
"Pray, tarry a moment. A bounty task is now issued. You may select one to undertake or bypass entirely:
A: Release within a woman's mouth.
B: Release upon a woman's visage.
C: Deliver a slap to a woman's cheek."
"I shall bypass it for now. More than vitality or sensitivity enhancements, the unknown intrigues me."
Kagura's curiosity piqued at the prospect of eschewing tasks, loath to be tethered by the system's whims.
"You have bypassed the bounty. You have acquired the ability: [Control of Sperm Potency]. Naturally, this bears no harm to your form."
"Sperm potency?" Kagura nearly chuckled, musing that the system's irreverence stemmed perchance from his recent dalliance with Hayasaka Ai—its rewards tailored to his immediate context.
"You may activate or deactivate it at will. When deactivated, your seed shall be rendered incapable of impregnation until reactivated."
"Then deactivating it now shan't affect what I've already bestowed, shall it? What of Hayasaka Ai? I've anointed her thrice within."
Kagura deemed this function rather splendid. To lavish a maiden's depths was a delight, yet contraception oft bore irksome consequences. With this, he could revel unbounded, free from the specter of unintended progeny.
"Should you presently wish to spare Hayasaka Ai conception, this system may effect a singular intervention."
"Hm… proceed with it, then. It would be troublesome should Hayasaka Ai bear fruit so soon."
Kagura resolved to inform her anon, sparing her the need for emergency measures—though she might misconstrue his intent.
"It is done. Shall you now deactivate your sperm potency?"
"May I reactivate it at my leisure?"
"Indeed."
"Then deactivate it."
"Deactivation successful. Do you wish to conclude this exchange? Should you require the system henceforth, merely think 'Summon Auxiliary System.'"
"Noted. Begone, and trouble me not unless summoned."
No sooner had Kagura spoken than his consciousness returned to his frame.
Gazing upon his still-turgid manhood, he flicked it with a knuckle, stretching languidly with a contented smile. "Fear not, my stalwart companion—unleash at will. When heirs are desired, I shall flick the switch anew."
Yet, Kagura was no mere slave to lust. Educated exquisitely in this life, he was no beast ensnared by beauty's lure, driven solely by baser instincts. Should he lie with another, it would be as with Hayasaka Ai—born of mutual affection and consent, a union of heart and flesh.
Even were the system to proffer a "License for Unpunished Violation," he would spurn it, his conscience recoiling at such trespass—unless, perchance, a maiden craved such dominion from him. But did such a soul exist? He deemed it improbable.
After supping with his mother Sayuri, his sister Eriri, her attendant maid Haruhi, and his own Hayasaka Ai, Kagura noted the latter's fatigue and granted her reprieve. He retreated to the music room, playing the piano into the wee hours before retiring, entrusting the chamber's tidying to Hayasaka Ai's direction of the other maids.
Today, April the first—Fool's Day and the commencement of Sobu High—Kagura set his alarm for seven, intending a brief slumber ere employing the system's sign-in to banish sleep's deficit.
At dawn, ten minutes shy of seven, Hayasaka Ai—immaculately groomed and clad in Sobu High's JK uniform—parted the divide betwixt their chambers. With sprightly grace, she approached Kagura's grand bed, swathed in deep crimson down, and deftly unlocked his phone with her fingerprint.
Their trust was absolute; each could peruse the other's device at will.
Having signed in the prior eve, replenishing stamina and vigor, Kagura had succumbed to sleep a mere hour hence, now reposing defenselessly.