Hayasaka coughed violently, and Kagura, heedless of his own state, hurriedly grabbed a mix of disinfectant wipes and tissues to help clean her up. She waved him off, gasping, "Stop… I'll rinse off first, cough… Master Kagura, please rest for a bit."
So Kagura escorted her to the bathroom, then tidied up briefly before retreating to his room to wait.
His erection showed no signs of subsiding, standing defiantly upright. Stripping naked, he draped a thermal robe over himself and sat on the bed.
About ten minutes later, Hayasaka, wrapped in a towel and freshly showered, burst through the partition door. Clutching her math notebook in her left hand, she shouted with rare fervor, "Master Kagura—!! My… my homework!!!"
Then, her right hand slapped her face, and she began to sob softly.
—Receiving your favor orally is one thing, but… my notebook's ruined… How am I supposed to explain this to the teacher tomorrow?
As a consummate professional maid, Hayasaka didn't dare blame Kagura's excessive libido. Instead, she cursed herself for not stowing her notebook properly.
"Uh…"
Kagura took a look.
Good grief—somehow, a spurt of semen had landed on her notebook, which hadn't been closed. The fluid streaked across, smudging the diagrams she'd painstakingly drawn.
The notebook was unmistakably unusable.
"This…"
Kagura examined it closely, feeling a pang of guilt at Hayasaka's pitiful expression. With no other recourse, he resolved to act.
"Activate auxiliary system."
In an instant, his consciousness detached from the world.
"Greetings, Master Kagura. The auxiliary system is at your service."
"Can this notebook be restored?"
"Of course."
"…Isn't that beyond your capabilities? You're not secretly siphoning my life force, are you?"
"Absolutely not. This system is highly advanced, designed to resolve your troubles. A trivial matter like this is well within my purview—I can restore it to its pristine state, free of any semen stains, in a heartbeat."
The system's words jogged Kagura's memory. When it first awakened, it mentioned two primary functions: check-ins and bounty releases. That implied secondary functions like this one existed.
Not bad at all.
"Oh… alright, hold on. End communication."
His consciousness snapped back to his body.
Seeing Hayasaka covering her face, torn between tears and restraint, Kagura gently ruffled her damp hair, consoling her. "There, there, Hayasaka. I'll perform a magic trick. Close your eyes, count down from three, and I'll make your notebook spotless, not a trace of semen."
"It's not dirty per se… just unusable for the teacher… cough," Hayasaka muttered, then straightened up. "Since when do you know magic? Isn't that all sleight of hand? Worst case, I'll recopy it…"
"No way. Close your eyes. Kagura keeps his promises."
Seeing his earnestness, Hayasaka reluctantly complied.
—Master Kagura, you don't have to push yourself. It's just a notebook. I didn't complain when you flooded my womb, did I?
Kagura swiftly summoned the system, instructing it to clean the notebook. In a flash, it was immaculate, devoid of any stains or dampness.
"Open your eyes."
Kagura flipped the notebook to face her, winking exaggeratedly.
"?!?!"
Hayasaka froze, stunned. She craned her neck, inspecting it closely, then snatched it from his hands, flipping through pages to confirm. Finally, she looked up, beaming with delight. "Master Kagura, you actually know magic? No, this is sorcery!"
She bounced with glee, her jubilant antics utterly adorable.
But as she hopped, the towel wrapped around her slipped, pooling on the floor to reveal her flawless, alabaster figure—and—
A lascivious tattoo on her lower abdomen.
Amidst her pale skin bloomed an intricate lace of pink and purple, its exquisite pattern instantly parching Kagura's throat. His erection, idle for over ten minutes, surged back to full rigidity.
Hayasaka instinctively covered her abdomen, too embarrassed to meet his gaze.
Her chest and lower regions went unguarded—she saw no point. During their inseparable middle school days, they'd slept naked in the same bed, with Kagura fondling her chest each night to drift off.
"No, no, just a parlor trick," Kagura said, taking the notebook, closing it, and tossing it onto a distant desk. He gently embraced her bare shoulders, nibbling her flushed earlobe, his breath heavy with obsession. "I restored your notebook. Now, help restore my erection… It's aching and quite cross."
"Your true nature surfaces so quickly… What am I to do with this lecherous pest?"
"Calling me names while using honorifics? That's quite the thrill."
"…" Hayasaka tapped her lips, turning away. "How about you wait while I dry my hair and change?"
"Change into what?"
Kagura was already primed, and her delay only intensified his itch.
"Please, just a moment," Hayasaka said, lightly stroking his throbbing erection. "Some things taste sweeter the longer they're savored, don't they?"
Fine—Kagura conceded she had a point.
So he endured another twenty-plus minutes. Finally, Hayasaka pushed open the door, sauntering in.
One glance, and Kagura, lounging in his robe, was genuinely dumbfounded.
Because Hayasaka…
She'd transformed her side ponytail into twin tails, tied with black satin ribbons in butterfly bows. Her bangs were neatly styled into airy wisps, and she wore sky-blue contacts. Donning Sobu High's JK uniform, complete with black thigh-high stockings and iconic loafers, she was the spitting image of Eriri.
Kagura's jaw dropped, but his erection betrayed him, swelling with a throb.
"You… you're… Hayasaka, right?"
He awkwardly shielded his explosively aroused erection.
Facing Hayasaka, cosplaying as his sister, in such a state was mortifying.
Thankfully, her absolute loyalty ensured she'd never betray him to Eriri.
"What's that?" Hayasaka mimicked Eriri's tone, planting her hands on her hips and leaning forward with a pouty glare. "You jerk of a brother—can't even recognize me?"