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In the blink of an eye, it was the next day.
When Bokue teleported from the Underworld at nine in the morning and reappeared in the Tokyo hotel suite's bedroom—well, a certain red-haired girl was still lying on the bed, eyes gently closed, her cherry-pink lips occasionally murmuring softly in her sleep. The blanket beneath her arm was stretched tight, outlining an astonishing curve.
Mio Naruse's current state was exactly like her distant cousin's back in the Underworld—clearly showing no intention of waking anytime soon.
After all, she truly was exhausted from last night.
Her first "game" session had lasted nine straight rounds without pause or protection. Any other beginner would've probably broken down—or even ended up hospitalized.
After a brief consideration, Bokue slipped off his shoes, climbed quietly onto the bed, lifted the covers, and carefully embraced her from behind.
"Mm…?"
Feeling someone suddenly hugging her, the peacefully sleeping red-haired girl's brows knitted together lightly.
Then—
"Let me go!"
Barely conscious, eyes still closed, Mio suddenly gave a sharp cry and whipped a hand backward from under the blanket, aiming to smack whoever was behind her.
Whoa!
Slightly startled, Bokue swiftly raised his hand, easily intercepting her attack, while calmly remarking:
"Whoa, friendly fire! Relax, Mio—it's just me."
"…Eh?"
Upon hearing the familiar voice, Mio slowly stirred awake, struggling through her lingering drowsiness to glance backward, and instantly froze.
"Ah… I-I'm so sorry! I thought… Sorry."
"No worries," Bokue reassured gently, releasing her slender wrist and tucking it back comfortably under the covers. "You didn't actually hit me anyway. Are you always this jumpy?"
"Not exactly jumpy…" Mio murmured, cheeks reddening from embarrassment. "It's just… Maria sometimes likes to prank me like this in the mornings—sneaking under the covers, tickling me awake. I'm sort of used to it by now. But you felt much larger than Maria, so my mind instantly jumped to the worst-case scenario—that the northern faction had finally caught me."
"Hmm~"
Bokue thoughtfully dragged out his hum.
"Anyway, I'm really sorry! It was my mistake, okay?" Mio finally burst out in embarrassment, her face burning hot. Then she lowered her voice shyly, muttering:
"Also… Good morning, um…"
But when it came to actually saying his name, she suddenly hesitated.
Truthfully, the two of them weren't exactly familiar. It hadn't even been fifteen hours since they'd met—yet they'd done absolutely everything possible, and even plenty they probably shouldn't have.
Despite that, their relationship remained somewhat ambiguous.
Calling him "Keikain" felt far too distant and overly formal; yet calling him "Bokue" seemed way too familiar, overly intimate, and downright strange.
"How about 'Brother-in-law'?" Bokue proposed thoughtfully, noticing her inner struggle.
Strictly speaking, Rias was indeed Mio's distant cousin, making Bokue her official brother-in-law. Besides, they'd soon travel to the Underworld, formally accept protection from the Gremory household, and Mio would inevitably have to acknowledge her lineage properly. Eventually, she'd start calling Rias 'Sister' anyway. Becoming comfortable with it now wasn't strange at all.
"B-brother-in-law?"
Without overthinking, Mio quietly tried saying it once.
"See? Isn't that much better?" Bokue smiled gently.
"Mm…" Mio murmured softly, cheeks blushing lightly as she nodded slightly. But suddenly, a realization flashed through her mind, causing her breath to hitch.
Hold on, wait! Actually, wouldn't calling him 'Brother-in-law' be even worse?! Considering their current relationship… she couldn't possibly call him "Brother-in-law" innocently during the day and then start gasping "Brother-in-law~! Brother-in-law~!" passionately at night, right!?
Wouldn't that seem even more scandalous?!
The red-haired girl opened her mouth, about to speak.
Just then—
Without any warning, the bedroom door swung wide open, and a certain mischievous silver-haired succubus—still dressed in her thin silk nightgown—stood grinning at the entrance, proudly holding up a portable video camera, loudly announcing herself:
"Good morning, Mio-sama~! Good morning, Bokue-san~! Oh my, I've captured quite the lovely shot! Already snuggling together so early in the morning? Perhaps you're planning another round of passionate activities?"
"M-Maria, you…!?"
Already flustered beyond belief, Mio instantly sat bolt upright. But a sudden ache shot through her lower abdomen, cutting off her words as she winced sharply.
No matter how resilient devils might be, the Gremory bloodline wasn't exactly known for being physically tough. Nine consecutive sessions on her first night was indeed overdoing things.
"Don't move so quickly, let me handle it."
Bokue gently pulled her into his embrace, softly pressing his palm—now glowing gently with spiritual energy—against her lower abdomen.
[Cellular Reconstruction]!
Within moments, the dull ache faded completely. Mio's expression quickly eased into relief.
"There. Better now?"
"Mmm…"
Mio nodded softly, cheeks reddening again.
"Thank you… Um… Brother-in-law."
"Ohh? Ohohohoho~?!"
Hearing the word 'Brother-in-law,' Maria, still holding her camera, excitedly bounced around by the door, acting like an overly-enthusiastic paparazzi photographer who'd just captured a priceless scoop.
"Calling him 'Brother-in-law' now, huh~? Could it be that Mio-sama is finally venturing into those forbidden kinks?! Oh my, this is simply too exciting—I couldn't even sleep properly from the anticipation!"
"Ma. Ri. A!"
Seeing the silver-haired succubus not only refuse to stop but become even more brazen, Mio—now completely healed—leapt swiftly from the bed and lunged furiously toward the door.
But Maria was one step faster—letting out a playful cry, she quickly darted away.
"Don't be angry, Mio-sama! I'm just diligently documenting your beautiful love-life!"
"Who cares about that?!" Mio shouted, furious. "I'm talking about you putting those weird mental suggestions into my head last night!"
"Eh? Wait, didn't Bokue-san explain that part already?"
As they ran circles around the room, Maria desperately shot pleading glances toward Bokue for assistance.
Bokue, for his part, simply shot back a casual look clearly saying: "You're on your own."
"He explained nothing!" Mio growled, eyes blazing furiously.
She'd been completely drained last night—nine rounds!—how could she possibly have energy left afterward to discuss something like that?
Maria desperately dodged, begging dramatically as Mio chased her relentlessly.
"Th-then… at least let's pause a bit? Can Mio-sama please listen carefully to Maria's explanation? Also, by this logic, does Mio-sama finally agree to let me frequently record your romantic and beautiful daily life from now on~?"
"As if I'd agree to that!!"
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