Crossover-Isekai 72

Chapter 72 The Miyajima Family Council (Part ②)


Edited by: Kanaa-senpai


 Knowing that Miyajima Sosuke was on the verge of reaching Grandmaster status, Aki figured the man had to have some inkling of the Inner World¹. For the social elite, the supernatural wasn’t a secret—it was just another tier of networking. Between exterminating Stray Devils, the Occult Research Club often picked up private contracts for high-end clientele. If Sosuke truly was clueless, Aki would just have to take the long way around and explain the basics from square one.


 As it turned out, Aki’s instincts were dead on. Sosuke’s face drained of color, his earlier composure vanishing in an instant. He leaned forward, eyes narrowed. “Uesugi-kun…. are you saying you’re a part of that world as well?”


 ”You could say that. Right now, I’m basically a temporary hire for the Gremory Family.” Aki had thought about calling himself a “Peerage member,” but since he lacked the crest Rias usually bestowed, he couldn’t prove it. If Sosuke asked for a receipt, he’d be dead in the water. “Yeah, a temp. This whole situation with Miyajima-senpai is actually my final test before I get brought on full-time.”


 Since Sosuke wasn’t high enough on the food chain to have clearance for Gremory-level intel, he took Aki’s confident explanation at face value. He nodded solemnly. “That is an incredible feat. It explains how someone as young as you, Uesugi-kun, possesses such terrifying strength.”


 ”It’s whatever,” Aki said, playing it cool. “It’s the Gremory Family. If you’re a weakling, they won’t even look at you, let alone hire you.”


 Sosuke took the bait completely. “True. With the Gremory name behind you, your future is limitless.” He sighed, a shadow crossing his face. He had once hoped Sakura would find her way into that hidden world. But after a year of training with no “special” encounters, he’d decided to close that door and have her focus purely on kendo. It was a harder path with lower odds of reaching the legendary realms, but it was safe. Or so he’d thought. Now, Aki was telling him she was already being hunted.


 ”Since you know the score, Master Miyajima, we can skip the fluff,” Aki said. “I’m still tracking the specifics, but I can confirm that ‘person’ followed Miyajima-senpai all the way to Aisu (Aiho) Academy.” He leaned on the word person, letting the silence emphasize that whatever was following her wasn’t human.


 ”If I keep her locked in the house, can we wait this out?” Sosuke asked.


 ”Maybe. But I’d suggest she keeps her routine. I’ve already got Aisu (Aiho) Academy wired for surveillance. If that ‘thing’ follows her here instead, not only does your family end up in the crossfire, but I lose my tactical advantage. I can’t turn this dojo into a fortress overnight.” Aki flashed a sharp, knowing grin. “Besides, a Master like you doesn’t want to live under a microscope, right? Even if you’re game, I doubt Miyajima-senpai or the Lady of the house would appreciate the intrusion.”


 It was a beautiful lie—half-truths wrapped in logic. Sosuke clearly knew just enough about the Inner World to be intimidated, but not enough to spot a fraud.


 ”Fine. We’ll do it your way,” Sosuke said, slamming his hand down on the table. He stood up and, in a move that spoke volumes about his desperation, gave Aki a deep, formal bow. “I’m placing my daughter’s life in your hands.” It was a surreal sight: a legendary kendo master bowing to a kid half his age. Aki just waved it off, acting like it was just another day at the office.


 Sakura and Miyajima Tsubaki looked like they were watching a movie in a foreign language. They were completely out of the loop. “Father? Uesugi?” Sakura’s brow furrowed. “What are you talking about? Is the ‘Gremory Family’ related to Rias?” She knew Rias; everyone did. The red-haired beauty was the only girl in school who could rival her own popularity.


 ”It’s getting late,” Aki said, checking his watch. “I should get going. My sister’s waiting on me for dinner.” He knew when to fold. The more he talked, the higher the chance of a slip-up. Better to let Sosuke handle the “talk” with the women.


 Aki slipped out of the quiet room, leaving the Miyajimas to their crisis. He didn’t care about their family drama; he had a Succubus to check on. He wanted to see if his Dual Cultivation had left its mark. If he could break a Succubus—a creature literally built for s*x—then turning a girl like Sakuramachi Touko into his personal, mindless pet would be child’s play.


 He was almost at the gate when a hand clamped onto his arm.


 ”Hey, Uesugi, right?” It was Miyuna, the kendo receptionist. She was still in her gear, smelling faintly of sweat and adrenaline. “I’m off in five. You mentioned dinner earlier—how about we go now?”


 ”Look, Miyuna-san…”


 ”Just Miyuna,” she corrected him, her eyes tracing his jawline. “Don’t be a stranger.”


 ”Miyuna, I’ve got plans tonight. Maybe next time.”


 ”You’re not ghosting me, are you?” She wasn’t just thirsty; she was fascinated. Watching him humble Sosuke had done something to her. She liked her men strong, which usually meant she stayed single.


 Aki looked her over. She was fit, assertive, and clearly looking for trouble. “You really want to play this game?” he asked, his voice dropping an octave. “I’ll be straight with you. I’m not looking for a girlfriend. I’m looking for a fuck buddy. If you’re down for that, we can eat. If not, don’t waste my time.”


 Miyuna froze. She’d never had a guy be that blunt with her. She looked at his confident, “trashy” smirk and realized that, strangely enough, she wasn’t offended. In fact, it made her want him more.


 ”Fine,” she said, her voice steady. “I’m not an idiot. A free meal and a good time? I’ll take that deal.”


Chapter illustration


 Aki grinned, pulling out his phone. “I’ll book a place. Show up when you’re ready.” He added her number, already thinking about how he’d toss her aside once he was bored. If she got clingy, a quick memory wipe would solve everything.


 —


 Summary:


 Aki successfully bluffs Miyajima Sosuke into believing he is a vital operative for the Gremory Family. He convinces Sosuke that the threat following Sakura is supernatural and secures permission to ‘protect’ her at school. Afterwards, Aki is approached by the dojo instructor Miyuna and establishes a blunt sexual arrangement.


 —


 Trivia:


 - Aki is technically lying about his ‘trial period’ status; it’s a bluff to gain authority.

 - Miyajima Sosuke knows about the ‘Inner World’ but is not a practitioner himself.

 - Rias Gremory’s popularity is high even among students from other academies like Sakura.

 - Aki’s ‘Dual Cultivation’ ability has potential mind-control or breaking properties.

 - Aki mentions having a sister, providing a glimpse into his civilian life


 —


 Character Insight:


 Aki demonstrates high-level manipulation, using the prestige of others (Rias) to secure his own goals. His interaction with Miyuna highlights his cold, utilitarian view of women and his willingness to use memory manipulation as a safety net.


 —


 Lore And Worldbuilding Context:


 The ‘craftsman spirit’ mention is a localized jab at Japanese corporate culture and formal bowing.


 —


 Glossary:


1 Inner World: Refers to the supernatural society hidden from common humans, including devils, angels, and fallen angels.


Notes:


• Miyajima Sosuke – Tall, disciplined kendo master in his late 40s, wearing a crisp white keikogi and hakama, he leads the Miyajima household with quiet authority. A devoted father to daughter Sakura, he balances protective instincts with a gentle smile. Near B‑rank, he’s approaching Grandmaster status, aware of supernatural hints but lacking deep technical insight.

• Miyajima – Family name of Sosuke, Tsubaki and Sakura.

• Aki – Transfer student at Kuoh Academy, silver‑haired and sharp‑eyed, Occult Research Club member. B‑rank Stray Devil with dual‑cultivation, Insight Eye and Mana‑Lightning Flash. Dates Rias Gremory and the Takamine sisters, holds the “Little Aki” essence. Defeated Miyajima Sosuke, monitors Aisu Academy, bluffs his status with the Gremory Family, adopts a scumbag persona while growing Mana.

• Rias – Rias Gremory, the 17-year-old pure-blood High-Class Devil and President of Kuoh Academy’s Occult Research Club, is the authoritative Crimson Ruin Princess of Kuoh Town—long crimson hair, crystal-like crimson eyes, and an explosive, elegant figure always clad in her school uniform. Determined and observant, she fiercely protects her peerage, mentors Aki as a big-sister figure, oversees his training, and is currently frustrated by her inability to reincarnate him, driving her to meticulously facilitate the ritual as both leader and guardian.

• Sakura – Sakura Miyajima, an upperclassman at Aisu Academy, is a tall, athletic kendo prodigy with the “Sword Heart” talent, wearing the school’s navy blazer and red hakama. Daughter of Sousuke, she sees Aki as a younger brother yet knows his predatory nature, and now stays with him after learning of the supernatural.

• Miyajima Tsubaki – A poised woman in her late 30s, dressed modestly, she is the wife of Miyajima Sosuke, mother of Sakura, and a member of the Miyajima household present at the meeting, currently under hypnosis that heightens her sexual desire.

• Tsubaki – Shinra Tsubaki, Vice President of the Student Council and Sona’s Queen, is a stoic Devil with black wings, clad in a standard school uniform, black lace bra, and silk stockings, her glasses framing a sharp, intellectual gaze. A master of privacy-bound magic, she aids investigations with razor-sharp analysis, masking deep jealousy of Aki’s time with the Occult Research Club—her hidden affection culminating in their first kiss. Though distant to most, she shares an intimate, unspoken bond with Aki, her composed authority concealing vulnerable devotion. As Sousuke’s wife and Sakura’s mother, she outwardly flirts with Aki, blending maternal warmth with seductive charm, her dual roles weaving tension beneath her polished exterior.

• Sakuramachi Touko – Sakuramachi Touko, a pure‑blood succubus masquerading as Aki’s classmate, has shoulder‑length bluish hair, an icy cool demeanor, striking beauty, and an eerie death stare on camera. A mental‑attribute mage, she rose from C‑Rank peak to B‑Rank via dual cultivation with Aki, wielding advanced massage and oral techniques.

• Touko – Sakuramachi Touko, a pure‑blood succubus masquerading as Aki’s classmate, has shoulder‑length bluish hair, an icy cool demeanor, striking beauty, and an eerie death stare on camera. A mental‑attribute mage, she rose from C‑Rank peak to B‑Rank via dual cultivation with Aki, wielding advanced massage and oral techniques.

• Miyuna – A late-twenties kendo instructor and receptionist at the Miyajima Dojo, she possesses a toned, athletic build honed by martial arts training and exceptional stamina. Infatuated with Aki after their encounter, she harbors a predatory romantic interest, masking her intensity with professional poise. This is the first time she’s brought a man—Aki—to her apartment, marking a bold, personal breakthrough after years of reserved, office-lady decorum.

• Rias Gremory – Rias Gremory, a pure‑blood high‑class devil, sports striking crimson hair, blue eyes, a curvy elegant figure in the Kuoh Academy uniform, and a large bust. She heads her household’s local affairs, rules the school’s hidden hierarchy, and wields top‑level demonic power.


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Edited by Kanaa-senpai.
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