Crossover-Isekai 62

Chapter 62 Incident at the Kendo Dojo


Edited by: Kanaa-senpai


 The receptionist looked Aki up and down, a flicker of pity crossing her eyes. Such a handsome young man, yet it seemed his soul had already been snatched away by Miss Miyajima. Why else would he skip class so early in the morning to come looking for her?


 ”Instructor Miyajima is in, but I can’t guarantee he’ll see you.”


 Aki caught the look but didn’t bother explaining. “Could I trouble you to let him know I’m here, then?”


 ”Sure. Just wait here a moment.”


 ”Thanks, gorgeous. I’ll buy you dinner sometime.”


 The receptionist’s eyes lit up. “Really? Don’t you go backing out on that!”


 Aki didn’t answer, offering only a playful smile. With her makeup on, she was a standard beauty, but her long hours at the dojo had given her an incredible physique. Even under the loose kendo gi, her provocative curves were impossible to miss. If she was looking for a “handout,” Aki didn’t mind checking if she had any special Talents.


 Seeing his silence, the receptionist gave his shoulder a boisterous pat. “It’s a deal, then. I’ll go tell the Instructor.”


 (Tsk… I didn’t expect to run into a predatory older woman here…)


 Aki clicked his tongue as he watched her wiggling, perky backside disappear down the hall.


* * *


 Meanwhile, Sakuramachi Touko woke up in a bedroom heavy with a pungent, lingering musk. She pushed her aching, limp body up, staring blankly at her surroundings. It took several minutes for her mind to fully sharpen. She pressed a hand against her bloated lower abdomen, a thrill of surprise running through her. Even after all this time, there was still such a dense concentration of life energy inside her. She squeezed her thighs together, focusing her innate Succubus abilities to digest the energy, desperate not to waste a single drop.


 Aki had taken much from Touko, but as a Succubus, she had gained just as much in return. The sheer boost from their Dual Cultivation¹ had pushed her from C-rank straight into B-rank. If she could fully process the sheer volume of Essence² he’d left inside her, she might even hit the peak of B-rank in one go. For anyone else, that would be impossible—but for a Succubus, this was the ultimate shortcut to power. Doing it with Aki was like a “one plus one equals ten” equation. Because his strength was higher than hers, the benefits to her were exponential.


 Touko held her breath, spending a full hour refining the Essence. By the time she finished, her new rank had stabilized, and she had even pushed a step further. She didn’t quite hit the peak of B-rank; her current ability wasn’t efficient enough to catch every stray bit of energy. Some of that Essence had bypassed her Mana pools entirely, automatically reinforcing her physical durability. She didn’t mind. If her body was tougher, she could last longer next time. If she could get Aki to leave a few more “deposits,” she’d make up the difference in no time.


 Between the Mana and the Essence, the stinging pain between her legs had finally faded enough for her to walk. She dragged her exhausted body out of bed and began cleaning the absolute wreck of an apartment. Once the room was settled, she moved to scrub her own body, which was still coated in Aki’s scent. Seeing the stains on the bed, the floor, and the table, Touko’s legs buckled slightly, and her breath hitched. As a Succubus, this was the first time she’d been so utterly dominated, beaten until her very consciousness had shattered.


 (Next time…) she vowed to herself. (Next time, I’m the one who comes out on top. As soon as I’ve recovered, I’m going back for more!)


 Unlike the men she’d “drained” and discarded in the past, her head was now entirely consumed by thoughts of Aki. Just the memory of it sent a jolt of excitement through her.


 It was strange, but she brushed it off. It was only natural to want more of a man that powerful—especially when the “payout” was ten times better than anyone else’s. However, she would soon find out that things weren’t going to be that simple.


* * *


 Inside the dojo, Aki was locked in a one-on-one sparring match with Miyajima Sakura’s father—Instructor Miyajima. A crowd of apprentices watched from the sidelines, mesmerized by the fierce exchange of blows. Among them was the receptionist, Miyuna. She bit her lip nervously, her face pale with regret. If she hadn’t opened her big mouth and mentioned that “Miss Miyajima’s suitor” was at the door, this wouldn’t have happened. Everyone knew the Instructor was a total “daughter-con,” but his reaction today was beyond extreme.


 ”Instructor, I’m telling you, I’m not her boyfriend!” Aki shouted, dodging a vicious strike. “We’re just classmates! I came here to ask you something!”


 The bamboo sword whistled through the air. Father Miyajima remained silent, his face a mask of cold fury. He’d ignored Miyuna’s report at first, but once Aki introduced himself, the gravity of the situation hit home. He’d spent weeks listening to his daughter ramble about this boy. Now that he’d forced her to transfer schools, the kid had the balls to show up on his doorstep?


 ”You’ve got skill, kid. I’ll give you that,” the father growled, his face darkening as Aki continued to evade him. “Now I’m going for real. Don’t complain about the weapon—most of my strength is in this sword.” He paused, his eyes narrowing. “You’ve clearly been trained in hand-to-hand. Stop holding back. Fight me like you mean it.”


 ”Seriously?” Aki scratched his head. “Fine. But let me take my shirt off. This is the last clean one I have.”


 One had been shredded by Himejima Akeno a few days ago; another was ruined by bloodstains yesterday. If this one went, he was out of a uniform. He’d have to ask Rias about a resupply. Since her team’s clothes seemed to explode in every fight, they had to have a massive stash of spares.


 As Aki stripped off his top, a collective gasp went up from the apprentices. Even Father Miyajima froze. They had estimated his strength based on his reflexes, but the visual was something else entirely. Aki’s physique was a masterpiece of proportion—lean, elegant, and rippling with explosive power. No one in the room, including the Instructor, even came close.


 While the men were stunned, Miyuna the receptionist saw this scene and her previous worries flew away. She licked the corner of her mouth with a charming expression, her eyes filled with lust.


 (Fight on. It’s best if you win, but it’s fine if you don’t. At worst, I’ll just use my body to compensate Aki afterward.)


 ”Alright,” Aki said, loosening up. “Let’s get this over with.”


 The Kuoh Academy uniform was stylish, but it was a nightmare to move in. He was terrified of splitting his pants. For a close-quarters fighter, these clothes were basically a debuff.


 ”HA! AH!”


 With a thunderous kiai³, Father Miyajima lunged. Aki didn’t blink. Unlike the five yellow-haired punks from yesterday, Father Miyajima had already touched the threshold of B-rank. If Aki wasn’t careful, he would take a few hits from the sword.


 In this world, the path of the warrior could lead to A-rank or even S-rank. Rias had explained it once: the legendary “Sword Saints” were A-rank, and the “Sword Gods” were S-rank. The same applied to spears and fists. One could reach the “God” realm through sheer physical perfection and the unification of spirit, but to go beyond that… that required something more.


 —


 Summary:


 Aki visits the Miyajima Dojo to find Sakura’s father, encountering a flirtatious receptionist. Meanwhile, Touko recovers from her session with Aki, realizing she has reached B-rank. The chapter concludes with Aki stripping his shirt to spar seriously with Instructor Miyajima.


 —


 Trivia:


 - Aki is running out of Kuoh Academy uniforms due to previous encounters with Himejima Akeno and recent fights.

 - Touko’s strength increased significantly because Aki is stronger than her, making Dual Cultivation more effective for the weaker partner.

 - Aki’s body automatically ‘fixed’ Touko’s physical durability using Essence that she couldn’t convert to Mana.

 - Instructor Miyajima is a ‘daughter-con’ and was triggered by Aki’s name because Sakura had been talking about him constantly


 —


 Character Insight:


 Aki is becoming more pragmatic about his ‘Talent’ testing and physical prowess. Touko is developing a biological and psychological dependency on Aki due to his superior ‘Essence’ quality.


 —


 Lore And Worldbuilding Context:


 The mention of Sword Saints and Sword Gods suggests a crossover with traditional xianxia or high-fantasy rank-based systems.


 —


 Glossary:


1 Dual Cultivation (双修): A concept where two partners engage in sexual activity to exchange energy and increase their cultivation or magical power.

2 Essence (精): Refers to the vital life force or biological energy often exchanged in Dual Cultivation.

3 Kiai (气合): A short yell or shout uttered when performing an attacking move in Japanese martial arts.


Notes:


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

• Aki – Uesugi, a transfer student at Kuoh Academy and member of the Occult Research Club, is a newly reincarnated B-rank Stray Devil with dual-cultivation and a system to copy talents, possessing an Insight Eye and Mana-Lightning Flash. Aware of doujin tropes and NTR mechanics, he resists full devil rebirth while embracing his “carnivore” nature, dating Rias Gremory and the Takamine sisters, and holding the coveted “Little Aki” essence. A student of the Hidden Academy, he detects Talent, recently defeated Miyajima Sosuke at the dojo, and navigates his complex relationships with anime-savvy cunning—acting as a considerate scumbag with growing Mana prowess.

• 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.

• Sakura – Upperclassman Miyajima Sakura, a heroic kendo prodigy with the “Sword Heart” talent, attends Aisu Academy. She sees Aki as a younger brother but recognizes his predatory nature. Daughter of Miyajima Sosuke, she is brave, romantically sensitive, and a former Kuoh Academy student.

• 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.

• Miyajima Sakura – Upperclassman Miyajima Sakura, a heroic kendo prodigy with the “Sword Heart” talent, attends Aisu Academy. She sees Aki as a younger brother but recognizes his predatory nature. Daughter of Miyajima Sosuke, she is brave, romantically sensitive, and a former Kuoh Academy student.

• Miyuna – A female student at the dojo with a strong physical attraction to Aki. The receptionist at the kendo dojo. Has a toned body from working in a martial arts environment and shows a predatory romantic interest in Aki.

• Himejima Akeno – Akeno Himejima, long‑black‑haired senior and VP of the Occult Research Club, wears the school uniform with a graceful aura. Her elegant, mature beauty hides a sadistic streak behind a kind smile; she wields golden lightning, stays icy when provoked, and serves as Rias Gremory’s trusted retainer and confidante. She also gives Aki a surveillance familiar and, as his “master,” oversaw the cleanup of his lethal clash with local punks.

• Akeno – Himejima Akeno, Rias Gremory’s queen and acting president of the Occult Research Club, is a voluptuous A‑rank devil with long raven hair in a hip‑length ponytail, purple eyes, and a school uniform of red pleated skirt, sheer black stockings and elegant purple armor. A Fallen Angel of the Himejima clan, she wields lightning and Azure Flame, mentors Aki with a teasingly maternal smile, hiding a bashful, maidenly side and her first kiss.

• 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.


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Edited by Kanaa-senpai.
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