Crossover-Isekai 215

Chapter 215 You Are Also a Devil Too


Edited by: Kanaa-senpai


 Approximately half an hour later, Mio Naruse’s brows furrowed slowly, and she opened a pair of peach-colored eyes.


 The moment she regained consciousness, she instinctively reached up to shield her slender neck, though the hand-chop she had expected never came.


 Aki, sitting not far from Mio, shot the succubus girl a sidelong glance. “I’ve been meaning to ask you, why didn’t you use mental magic1? Why’d you have to go and use a brute-force method like knocking her out?”


 ”I forgot… hehe~” Maria Naruse stuck her tongue out and tapped her little fist against her own head, trying to charm her way out of trouble.


 Like a kitten, Maria was best at close-quarters combat. If enemies were fooled by her petite, adorable appearance, the end result was usually quite tragic. However, that didn’t mean she was incapable of using magic. As a succubus, basic mental magic was as instinctual as breathing; she could use it at the drop of a hat.


 Aki didn’t really care, he was just venting, but Mio—who had clearly been left with some psychological trauma—was a different story.


 The tsundere, twin-tailed, busty schoolgirl looked toward the source of the voice, and a fire instantly ignited in her eyes. She stood up with a start. “Forgot? Is that really your reason?”


 Mio looked irritably at the strange little girl who claimed to be her sister, and while feeling the dull ache still lingering in her neck, she said, “This is illegal kidnapping! I’m calling the police!”


 ”I’d advise against doing that.”


 Seeing she was actually pulling out her phone, Aki had to speak up. During the time she was asleep, he had already confirmed the details with Maria. Aside from the fact that Jin Toujou hadn’t appeared, everything else was largely the same as what he remembered.


 When it came to Devils, the regular police were of no use. Calling them would only expose their current location. Aki had already notified Akeno Himejima and the others, as well as Rias, who was currently in the Underworld.


 Rias happened to be home at the time, and after asking her mother, she confirmed that everything the succubus had said was true. Inter-dimensional communication was a bit inconvenient, but she had sent a reply a few minutes ago saying she would hurry back. Until then, Aki was in full charge of the situation.


 ”Ha? Who are you? Did you make this person kidnap me?” Mio looked at Aki vigilantly, her hands instinctively crossing over the pair of “rabbits” jumping around on her chest.


 ”Let me introduce myself: Aki Uesugi, Year 2, Class A, Kuoh Academy.”


 Aki knew that if he wanted to get Mio to listen, he couldn’t use force. When dealing with a tsundere, the best way was to go with the flow.


 ”If you don’t mind, classmate Naruse, you can just call me Aki. I didn’t order Maria to kidnap you, but if you can’t calm yourself down, I’ll have no choice but to use some firmer methods.”


 Mio not only possessed Wilbert’s incredibly powerful mana, she also had stronger latent potential. She couldn’t control these powers, but if she were stimulated too severely, she would likely go on a rampage. Aki didn’t want to take that risk; if a conversation could solve it, that would be for the best.


 Staring at Aki’s clean, handsome face, Mio slowly lowered her hands, and her anxious heart gradually settled.


 She carefully observed this unfamiliar house and Aki’s attire, feeling that he wasn’t trying to deceive her. Although her first impression of this boy about her age was quite good—there was even a faint sense of affection—her preconceived notions kept Mio from fully trusting him.


 ”My name is Mio Naruse. Where is this place? Why did you bring me here?”


 It was another barrage of questions. Aki rubbed his temples, feeling a bit distressed. Clearly, Maria hadn’t explained things very well. It was true that Mio was Wilbert’s daughter and had inherited Demon King-class mana, and it was true that she had great potential. However, since she was born, she had lived her life as an ordinary girl.


 The existence of magic and Devils was a secondary issue; the facts were right in front of her, so she couldn’t not believe it. But to get her to believe that she wasn’t raised by her biological parents, and to accept her true lineage, would be impossible to achieve just by talking without proof.


 ”Mio-sama! I really didn’t lie to you, why won’t you just believe me?” The succubus girl was getting a little anxious. She had explained everything clearly, yet Mio refused to believe her and kept treating her like a bad person… She admitted her actions were a bit extreme, but if she hadn’t done it, Mio might have been dead by now.


 ”How am I supposed to believe you?” Mio replied coolly. “You suddenly appear in front of me and then suddenly start spouting stuff that sounds like a fantasy story…”


 ”I acknowledge that you possess powerful strength, and maybe Devils really do exist in this world, but what does that have to do with me? I just want to continue living my own life.”


 ”But Zogil wants to kill…” Maria said with a desperate expression, continuing to try and persuade Mio.


 ”Maria.” Aki interrupted the succubus girl. “No need to say more. Unless her adoptive parents say it themselves, or she sees it with her own eyes…” He paused, looked deeply at Mio, and continued, “Otherwise, no matter what you say, she won’t believe it.”


 Mio felt the strange look in Aki’s eyes, and she suddenly began to feel flustered, as if something bad was happening.


 Without giving her time to think, Aki continued, “However, as long as you believe that Devils exist, then things are easier.”


 As he spoke, the clubroom door was pushed open, and the members of the Occult Research Club, led by Akeno Himejima, walked in one after another.


 The sisters’ attention was instantly drawn to them, and they curiously sized up the group of “handsome men” and beauties.


 ”Let me introduce them. This is Akeno Himejima, our Vice-Buchou, a third-year, and her position is Queen. This is Asia, a former nun, a first-year, and her position is Bishop. This is…”


 Aki introduced them one by one, then said to them, “This is Mio Naruse, and the little girl next to me is Maria Naruse.”


 As for their identities and the reason they were here, everything had been explained during the previous contact, but since it was the first time meeting, they had to recognize faces.


 Mio and Maria greeted everyone one by one, then asked, “So, this is Kuoh Academy? What are these ‘positions’ you’re talking about?”


 ”Don’t be in such a hurry. Since you believe in the existence of Devils, I will answer your questions one by one, along with the previous ones.” Aki smiled faintly and said, “But before that, you need to know that everyone here, including you…”


 Whoosh…


 Aki spread his broad bat wings, and then Akeno Himejima and the others revealed their own Devil forms one after another. Even Maria revealed her wings.


 A powerful gust of wind swept through the room. As if influenced by the aura, the Devil lineage within Mio was stimulated. A pair of slender, pitch-black wings uncontrollably tore through her top and appeared on her back for the very first time.


 ”Are all Devils.”


 At the same time, Aki finished the most important part of the sentence.


Chapter illustration


 Mio widened her eyes, looking at everyone in disbelief. Before she could recover from the shock that everyone was a Devil, she suddenly felt like there was something on her back.


 She turned around instinctively to look, and a pair of pitch-black bat wings appeared behind her.


 She moved her mind, and the wings flapped slightly, bringing up a gust of air.


 ”I am also… a Devil.”


 ”Yes. And not only are you a Devil, you are a pure-blood one… Your biological father is the Demon King.”


 Aki tucked his wings away and said to the bewildered Mio. He had wanted to say “Pure-blood Devil,” but since Mio’s biological mother was unknown, he decided to phrase it that way instead.


 ”Classmate Naruse, try to feel it carefully. You should be able to use magic now.”


 With her bloodline initially awakened, the power left behind by Wilbert was gradually being mastered by Mio. She didn’t need to learn simple magic; she could use it directly.


 Sure enough, after meditating with her eyes closed for a few seconds, a small magic circle quickly took shape in her white, tender hands, and blazing hot flames surged from it.


 Because it was her first time using it, her control was not very skillful, and she almost set the sofa next to her on fire. Fortunately, Aki and the others were watching, so they forcefully extinguished her fire magic just in time.


 Looking at the pitch-black bat wings behind her and the scorched marks on the wooden floor, Mio’s heart began to waver.


 ”In this world, there aren’t just Devils; there are Angels, Fallen Angels, the Dragon Race, and Yokai… The Three-Race War many years ago caused a significant reduction in pure-blooded Devils… Evil Pieces… Rating Games…”


 After waiting for Mio to digest the information for a while, Aki began to explain the science of it all to her from the beginning, while having Amano Yuuma (Raynare) and the others cooperate by demonstrating their Fallen Angel forms.


 Aside from Mio, the succubus girl also listened with great interest.


 —


 Summary:

 After regaining consciousness, Mio Naruse is confronted by Aki, who explains the reality of her supernatural existence and lineage. Despite her initial resistance and skepticism, the physical manifestation of her own Devil wings and the demonstration of magic by the Occult Research Club members force her to reconsider her situation. Aki proceeds to educate her on the complex supernatural world, leaving Mio in a state of shock and existential doubt.


 —


 Trivia:

 Aki has already informed Himejima Akeno and Rias Gremory about the situation.

 Rias Gremory confirmed the sisters’ identities with her mother before returning.

 Jin Toujou is notably absent from the events surrounding the sisters.

 Mio’s Devil wings sprouted from her back by tearing through her clothing due to the pressure.

 Aki is currently in full charge of the situation until Rias returns.


 —


 Translation Notes:

1 A specific type of supernatural ability used to manipulate or affect the mind, distinct from physical or elemental magic.


Notes:


• Naruse – The family name carried by Mio, her sister Maria, and their parents. This significant lineage is deeply tied to the history involving Wilbert and is central to the current pursuit.

• Mio – A busty, twin-tailed high school heroine with red hair and peach eyes, she is a pure-blooded Devil possessing immense latent mana and fire magic. Unaware of her lineage, she loves her adoptive parents but is now hunted by various Devils. Vulnerable yet inquisitive, the daughter of Wilbert and sister to Maria—who keeps her comatose in a classroom—she is protected by Maria and Aki from rival factions.

• Aki – A tall, handsome youth with a commanding presence, this Kuoh Academy student possesses a complex heritage—part Devil, Fallen Angel, and Nekoshou. A middle SS-Class powerhouse, he wields lightning magic, healing abilities, and talent-copying skills. As a pragmatic, detached tactician in Rias’s peerage, he acts as a protector to the ORC and a dominant partner to Akeno while navigating Underworld politics.

• Maria – Shela’s daughter and a rare succubus lineage survivor, she appears as a petite, white-haired girl due to a seal that hides her mature form. Nimble in combat and skilled in mental magic, this playful yet vigilant student at Kuoh Academy acts as a dedicated tactical aide to Aki and protector of her half-sister, Mio, while navigating her role as a bridge between the Underworld and the Gremory family.

• Toujou – The Toujou family name, carried by Koneko.

• Jin – A handsome, middle-aged man wearing glasses and casual attire. He acts as a guardian for his son, Basara, while navigating a complex web of allegiances within the Underworld. Additionally, he is identified as a potential protector for Mio.

• Akeno Himejima – Akeno Himejima is a beautiful, elegant senior of the Occult Research Club and Rias Gremory’s trusted retainer. A hybrid of three races, this tall, large-busted member displays a teasing, black-hearted personality. As a key communicator wielding golden lightning and Azure Flame magic, she masters Aki, providing him a surveillance familiar and overseeing post-clash cleanup.

• Himejima – Akeno Himejima is a tall, graceful Kuoh Academy senior in Rias Gremory’s peerage. Possessing mature beauty and long black hair, she balances a sadistic, queen-like personality with a poised, teasing nature. A loyal retainer deeply bonded to Rias, this powerful Devil wields golden lightning, manages surveillance, and executes transport magic circles while playfully guiding and observing Aki.

• Akeno – Himejima is a tall, curvaceous, raven-haired Orc-devil and S-Class Vice-Buchou of the Occult Research Club with Queen rank. Masking a sadistic side with calm elegance, this older student handles administration and magical support, including portal transportation. Composed and loyal, she shares a complex, sparring-filled bond with Aki, balancing group decisions with personal desires for his attention.

• Rias – As the red-haired S-Rank heiress of the Gremory family and sister to a high-ranking official, she is a powerful, intelligent, and well-endowed leader. Serving as King of the Occult Research Club, she is a decisive figure who balances her family responsibilities with a fierce drive for independence. She focuses on mastering the Rating Game while navigating her bond with partner Aki.

• Uesugi – Aki is a slender, silver‑haired Martial God realm cultivator with calm, resolute eyes and perfect physical mastery, allowing absolute control over his massive physical proportions. He commands the mystical Azure Flame. Bearing the Uesugi name, this powerful, pragmatic, and occasionally ruthless A‑rank Stray Devil is linked to the Kurogane line and the Takamine family’s household dynamics, as noted by Kalawarner.

• Y – The first initial/part of the name Y Ddraig Goch.

• Wilbert – The deceased former Demon King, lover of Shela, and father of Maria. Linked to the previous head of the Gremory family, he played a pivotal role in Mio’s upbringing by carefully selecting her kind, anonymous adoptive parents in the Human World.

• Zogil – A gaunt, dying Devil Grand Duke residing in a remote region near the end of his lifespan. Serving as a power benchmark for Maria with an estimated Ultimate-Class strength, he leads a faction seeking to eliminate Mio. Due to shifting timelines, he has not yet captured Shela, and he operates as an entity potentially monitoring magical signatures.

• Queen – A devil serving Riser Phenex.

• Asia – A gentle blonde little nun recently reincarnated as a devil, she now serves as a Bishop and crucial healer for conflict survivors. As an earnest first-year student and newcomer undergoing training, she shows deep concern for others and a naive affection for Aki. She was present during transport preparations and once tried inviting Aki to lunch before being interrupted by his time with Koneko.

• Nue – A B-rank Youkai with a high concentration of Youkai blood. He possesses the appearance of a typical office worker and is associated with the Miura family company. An avian Youkai with B-Rank strength hired by the Miura family. He possesses the ability to sense magical auras and is referred to with the title of Master by Miura Akira.

• Amano Yuuma – Yuuma Amano (Raynare) is a Fallen Angel disguised as a transfer student serving in Rias’s Peerage, the ORC, and a barrier maintenance team. Possessive and assertive toward her partner Aki, this bold, proactive member takes the lead in training and desires intimacy. She has long black hair, white skin, a slender waist, and black wings, often wearing a revealing, glamorous leather outfit.

• Raynare – Lady Raynare, alias Amano Yuuma, is a voluptuous, dark-haired former Fallen Angel reformed and training under Rias at the Occult Research Club. Shifting between an innocent schoolgirl guise and her true form, she is one of five women training with Aki, her mentee. She shows a keen, heated interest in him and a pragmatic approach to their shared arrangements, having once led a cadre against Mittelt.

• Amano – Raynare, a fallen angel masquerading as Kuoh schoolgirl Yuma Amano, is a striking, long-haired woman with a commanding presence. An Occult Research Club member with a history of betrayal, she acts as a disciplined leader/mentor figure. Despite an A-Rank status with Aki, a black-belly nature, and instant-change powers, she hides her faction ties while struggling with guilt and fear of abandonment.

• Yuuma – Amano Yuuma (Raynare) is a striking, curvaceous fallen angel with long black hair, violet eyes, and a playful, mischievous personality. A former Grigori operative and master of light magic, she is now a devoted Pawn in Aki’s peerage. While she teases others about their relationships, she serves Aki with obsessive, yielding devotion, sharing a profound physical and spiritual bond with him.

• Himejima Akeno – A female student with black hair worn in a ponytail, characterized by a buxom physique and a previously reserved nature that has given way to an assertive, passionate demeanor during cultivation.

• Rias Gremory – Rias Gremory, a pure-blood high-class devil from the prestigious Gremory pillar, is the influential, commanding, yet occasionally lazy leader of Kuoh Academy’s Occult Research Club and its hidden hierarchy. She has a curvy, elegant figure, a large bust, striking crimson hair, and blue eyes. Wielding top-level demonic power, she expertly governs her household’s affairs and school club members.

• 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 prominent bust. She leads her household, governs the school’s hidden hierarchy, wields top‑level demonic power, and belongs to the prestigious Gremory family—one of the remaining Seventy‑Two Pure‑blood Demon pillars.


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Edited by Kanaa-senpai.
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