Para los que hablan español acá está la teoría:
https://youtu.be/3pQvX4rIZcE
The night slid like black ink through the streets of Kuoh as I stood motionless in my room, staring at the ceiling. The fluorescent numbers of my interface blinked before my eyes, showing my updated statistics. The encounter with Raynare remained fresh in my memory, like a wound that refuses to close.
System: Combat Instinct has risen to level 2
Description: Your ability to anticipate enemy movements has improved. Reaction time reduced by 5%.
I smiled in the gloom. Each day was one more step toward survival in this world of demons, fallen angels, and capricious gods. I slowly sat up, feeling my muscles protest from the recent exertion. Accelerated regeneration was efficient, but the pain lingered as a constant reminder of my mortality.
—Statistics —I murmured, and the interface unfolded my progress:
Harry Level 4
Strength: 14 (+2)
Agility: 16 (+3)
Vitality: 13 (+1)
Intelligence: 10
Wisdom: 8
Charisma: 9
Skills:
• Survivor (Passive) – Level 2: Multiplier 1.65x, duration 7s
• Sprint (Active) – Level 2: Speed +60%, duration 5s, cooldown 3s
• Enhanced Senses (Passive) – Level 2: Detection range 15m
• Shadow Hunter (Passive) – Level 1: Mobility in darkness +20%, hostile detection 10m
• Combat Instinct (Passive) – Level 2: Reaction time –5%, attack pattern prediction
Inventory:
• Demon Claw (Upgrade Material)
• Kitchen Knife x3
• Baseball Bat (Damaged)
• Flashlight
• Basic First-Aid Kit
Fatigue overwhelmed me, but I knew I couldn't rest. The System never slept, and neither should I. I approached the window and gazed at the sleeping city, now a game board where every shadow hid potential threats… or rewards.
—System, can I use the Demon Claw? —I asked in a low voice.
System: The Demon Claw can be used to create or enhance weapons. Available options:
1. Create Demon Dagger (Requires: Demon Claw x1, Knife x1)
2. Reinforce existing equipment (Requires: Demon Claw x1, Item to upgrade)
Without hesitation, I selected the first option. The sharpest kitchen knife I had began to vibrate in my hand. The Demon Claw disintegrated into purple particles that enveloped the ordinary metal. The process took mere seconds, but when it finished, I held in my hands a dagger of black blade with crimson veins that seemed to pulse like living veins.
System: Demon Dagger created
Rarity: Uncommon
Damage: 25–30 (+5 vs. demonic entities)
Special Ability: Bleed (10% chance to inflict continuous damage for 3s)
I smiled as I ran my thumb along the edge. This would change the rules of the game.
---
The next day, the school felt like a cardboard set. I attended classes like an automaton, feigning attention while my mind processed strategies and scenarios. During lunch, Kiba approached my table with that perfect smile that masked an assassin beneath the school uniform.
—Rias-sama wants to see you this afternoon —he said, keeping a casual tone that would fool no one who really listened—. She's been… impressed with your nocturnal activities.
I nodded without surprise. It was to be expected that the Gremory territory was under surveillance, and my hunts had hardly been discreet.
—I'll be there —I replied, noticing how Issei and his perverted group tried to spy on the kendo club from a nearby window.
Kiba followed my gaze and smiled with a certain resignation.
—He still doesn't know anything, right? —he asked.
—He'll know soon —I answered, recalling the anime's timeline—. The gears are already in motion.
Kiba gave me a curious look before departing with elegance. He knew my knowledge was suspicious, but that could play to my advantage. Uncertainty breeds both fear and respect.
When classes ended, I headed to the old building where the Occult Research Club maintained its façade. The aura of power emanating from the place was almost palpable to my enhanced senses. I gently knocked on the door.
—Come in —Rias's melodious voice pierced the wood.
Inside remained unchanged from the previous day: candles, arcane symbols, ancient books, and the unmistakable scent of incense and demonic power. Rias sat behind her desk, Akeno to her right. Koneko lounged on a sofa, devouring sweets with apparent disinterest, while Kiba stood next to a bookshelf.
—Harry-kun —Rias greeted with that smile that had captivated so many—. Thank you for coming. We have much to discuss.
System: Mission "Among Demons" updated
Current objective: Establish alliance with the Gremory Clan
Reward: Access to demonic knowledge, potential territorial protection
I sat down opposite her, keeping a relaxed but alert posture. My Demon Dagger rested hidden under my jacket, ready for use.
—You've piqued our… curiosity —Rias continued, leaning forward—. You're not a demon, but you're not an ordinary human either. Certainly not a fallen angel or an exorcist. What exactly are you, Harry-kun?
The question floated in the air like a time bomb. My answer would define our future relationship.
—I'm a hunter —I replied calmly—. Someone who died and was given a second chance, with certain… enhancements.
Akeno let out a soft giggle that sent chills down my spine.
—Ara, ara, what an interesting way to say you're dangerous —she teased, as tiny sparks danced between her fingers.
—Not to you —I clarified, looking directly at Rias—. I have no interest in challenging Gremory territory. I merely seek to eliminate threats and grow stronger.
Rias intertwined her fingers, evaluating me with those turquoise eyes that seemed to pierce my soul.
—However, you have been hunting in our territory without permission —she pointed out—. That could be interpreted as provocation.
—Or as free cleanup service —I retorted.
Koneko scoffed from her seat, the first sign she was paying attention.
—You smell of blood and something else —the nekomata murmured—. Something… systematic.
Her choice of words made me hold my breath for a moment. Could she detect the System with her supernatural senses?
—What Koneko means —Rias interjected— is that your power seems to follow very specific rules. It's neither natural magic nor demonic.
—It's my nature now —I replied evasively—. And I can be a valuable asset to you. Renegade demons are only the beginning. I know greater threats will come to this city.
Rias arched an eyebrow, intrigued.
—How could you know that?
I shrugged with a confidence I didn't entirely feel.
—Let's say death gave me a certain… perspective.
Rias exchanged glances with Akeno, a silent conversation that ended with the Thunder Priestess's slight nod.
—Very well, Harry-kun —Rias finally declared—. We are willing to formalize an alliance. You may continue your activities under our protection, but you must report your findings to us and come if we request your help.
System: Alliance with the Gremory Clan established
Benefits: Limited access to the demonic library, permission to operate in Gremory territory, potential information exchange
—Agreed —I replied, extending my hand.
When Rias shook it, I felt demonic power tingle in my skin. It wasn't the binding contract she used with her servants, but it did establish a commitment.
—One more thing —Rias added—. There is a student who interests us. Hyoudou Issei. We want you to keep an eye on him.
—Do you think he's in danger? —I asked, feigning ignorance.
—Let's just say he has… potential —she answered with an enigmatic smile.
System: Side mission "The Red Pawn"
Objective: Monitor Hyoudou Issei, intervene only if his life is in immediate danger
Reward: +10 Gremory Clan trust, information on Sacred Gears
I nodded, knowing exactly what would happen to Issei. The question was: should I intervene or let the story unfold as it did?
---
That night I decided to explore the limits of Gremory territory. My Demon Dagger rested in an improvised sheath on my belt as I traversed the rooftops with the agility my stats provided.
The System suddenly alerted me:
System: Hostile entity detected
Distance: 18m
Levels: 2 low-level entities, 1 mid-level entity
I halted abruptly, activating Enhanced Senses to locate the threat. In a nearby alley, two grotesque renegade demons cornered a platinum-blonde girl wielding a gleaming sword. Despite her defensive stance, I could see blood from a shoulder cut.
System: Analysis complete
Entity identified: Asia Argento (Human with potential)
Threat: Renegade Demons (Lv. 5 x2, Lv. 8 x1)
Asia? My heart skipped a beat. According to the timeline I remembered, Asia shouldn't be in Kuoh yet, and certainly not battling renegade demons alone.
Something had changed. My presence was altering events.
Without hesitation, I activated Sprint and leaped into the alley, landing fluidly between Asia and her attackers. The demons recoiled, surprised by my sudden appearance.
—Who the hell are you? —growled the larger one, a deformed being with three arms and scaly skin.
—I'm the hunter —I replied, drawing my Demon Dagger.
The black blade shone with a crimson glow under the moonlight. Asia gasped behind me, her breath ragged with fear and exhaustion.
—T-thank you —she murmured in heavily accented Japanese—. God sent you…
—Not exactly —I countered, not taking my eyes off the threats—. Stay behind me.
The demons lunged at us without warning. I activated Survivor just in time, feeling the world slow and my reflexes sharpen. The first lesser demon received a diagonal slash that opened its chest from shoulder to hip, revealing a dark, bubbling interior like tar.
System: Critical hit applied
Bleed activated
The second struck from my left flank, attempting to impale me with what looked like a bony claw. I spun with the momentum of my first strike and plunged the dagger into its throat with an upward motion. The creature collapsed, convulsing as it dissolved into dark particles.
System: Enemy eliminated
Experience gained: +120
The larger demon, however, was craftier. It capitalized on my focus on its companions to launch a dark energy attack that struck me squarely in the chest.
The impact threw me against a wall, expelling the air from my lungs. A lacerating pain tore through my back, and for a moment I saw stars dancing before my eyes.
System: Physical integrity at 52%
Severe wounds detected. Accelerated regeneration activated.
I staggered upright, just in time to see the demon advance toward Asia, who had fallen to her knees.
—Your Sacred Gear will be mine, little nun —it hissed in a voice that seemed to come from many places at once.
—Don't you dare touch her! —I roared, ignoring the pain.
I activated Sprint again and lunged at it, but this time I was prepared. From its hand arose a black mist that solidified into a sort of shield. My dagger clanged against it with a metallic screech.
—Pathetic human —it sneered—. Your blood smells of power, but you don't know how to use it.
It was right. I was fighting on instinct, without strategy. I needed to change my approach.
System: Tactical suggestion available
Analyze enemy movement patterns to identify weak points
I took a step back, keeping my defensive position in front of Asia. The greater demon advanced confidently, savoring its impending victory.
—Combat Instinct —I murmured, letting the skill heighten my perception.
The world gained crystal-clear clarity. I could see every muscle tense beneath the demon's corrupted skin, anticipate each attack seconds before it occurred. When it launched its next blow, I moved with millimetric precision, dodging it by inches.
The revelation struck me like lightning: every time it attacked, a spot on its right flank was exposed for exactly 0.8 seconds.
Three more attacks, three perfect dodges. The demon grew frustrated; its movements became more aggressive and less accurate. The moment had come.
—Sprint! —I exclaimed as it launched its most powerful strike.
Instead of dodging, I slid under its guard and, with a wrist twist I'd honed in my nocturnal hunts, drove the Demon Dagger into the precise weak point I'd identified.
The black blade pierced as though demonic flesh were butter, sinking to the hilt. The demon howled, a sound that reverberated against the alley walls and likely through dimensions I couldn't perceive.
System: Critical damage x3
Enhanced bleed activated
I leaped back, watching the creature writhe in agony. Its body began to disintegrate, corruption devouring it from the inside out. Within seconds, only a puddle of dark ichor bubbled weakly before evaporating.
System: Enemy eliminated
Experience gained: +350
Level reached: 5
Reward: +3 stat points, Demon Soul Shard (Rare material)
I breathed deeply, feeling accelerated regeneration close my wounds. I sheathed the dagger and turned to Asia, who looked at me with a mix of awe and fear.
—Are you okay? —I asked, extending my hand to help her up.
She nodded timidly, accepting my help. Her green eyes shone with innocence despite the horror she'd just witnessed.
—Th-thank you for saving me —she said softly—. My name is Asia Argento. I'm… I was a sister of the Church.
—Harry —I replied—. What is a nun doing fighting demons in Kuoh?
Her eyes filled with tears, and for a moment I felt like a monster for asking.
—I was exiled —she whispered—. For healing a demon with my power. They called me a heretic. Then… then a man named Freed brought me to Japan, but I discovered he worked for fallen angels. I escaped and…
Her voice cracked. I knew exactly who Freed was: the psychotic exorcist working for Raynare. This confirmed the timeline was accelerating.
System: Side mission "The Holy Maiden"
Objective: Protect Asia Argento from fallen angels
Reward: Potential access to Twilight Healing power, increased influence in main plot
—You need a safe place —I said, deciding on the spot—. I know people who can help you.
I immediately thought of Rias, but hesitated. In the original timeline, Rias let Asia die so she could reincarnate Issei as her Pawn. I couldn't trust she'd protect Asia out of altruism.
—You'll come with me —I declared—. I'll keep you safe.
Her smile lit the grim alley.
—God bless you, Harry-san.
I made an involuntary grimace at the blessing, although technically I wasn't a demon and it shouldn't affect me.
—Let's go —I said, offering her my back—. Hold on tight. We'll take the fast route.
As I leaped from rooftop to rooftop with Asia clinging to my back, my mind raced. I'd saved Asia before Raynare could capture her. This would significantly alter future events. Issei would probably still be killed by Raynare, but without Asia as catalyst, his development would differ.
The System vibrated with new notifications:
System: Main plot altered
New story branches available
Attention: Significant alterations may attract higher-level entities
I didn't care. With every step I took, every decision I made, this world ceased to be the predefined stage of the anime and became MY world, MY story. And in this version, perhaps Asia wouldn't have to die.
---
Arriving at my apartment, I settled Asia into the guest room I'd never used. The poor girl was exhausted, both physically and emotionally. After ensuring her wounds were tended (politely refusing when she offered to use her Twilight Healing on me), I let her sleep.
Meanwhile, I opened my interface to allocate my new stat points:
Strength: +1
Agility: +1
Intelligence: +1
Then I examined the newly acquired item:
Demon Soul Shard
Rarity: Rare
Description: Condensed essence of a mid-level demon. Can be used to:
1. Enhance existing weapons
2. Create temporary enhancement potions
3. Initiate a power-absorption ritual (Warning: may have side effects)
I decided to save the shard for later. I needed to research more before using it.
That night, while Asia slept, I sat on the balcony watching the city. The encounter with Raynare lingered in my mind. I knew she would come for Asia eventually. I needed to prepare.
System: Daily mission available
"Defense Preparations"
Objective: Fortify your refuge against supernatural intruders
Reward: Basic protection barrier, +150 EXP
I accepted the mission and spent the next hours setting small traps around the apartment. Nothing lethal, just mechanisms to alert me if someone—or something—tried to enter without permission.
As I worked, I reflected on my situation. In a few weeks, I had gone from an ordinary human to a demon hunter with constantly evolving powers. I had altered a timeline I knew well, and now I moved through uncharted territory.
System: Constant evolution is the key to survival. Adaptation is inevitable.
The words appeared before me without prompt. It was the first time the System spoke to me directly, without a prior request. A shiver ran down my spine.
—What do you know that I don't? —I murmured.
But the System remained silent, like a distant god who had decided it had said enough for one night.
---
The next morning brought new challenges. I couldn't leave Asia alone, but I also couldn't skip school without raising suspicion. After a brief explanation, I left her prepared meals, my phone number, and strict instructions not to open the door to anyone.
—I'll be back as soon as I can —I promised—. Don't worry, this place is safe.
I didn't mention the improvised magical traps and alarms I'd installed overnight.
Arriving at school, I immediately sensed something had changed. There was tension in the air, a buzz of supernatural energy that made my skin crawl. My enhanced sensory skills detected multiple non-human presences on campus.
System: Security warning
Multiple supernatural entities detected
Factions identified: Demonic (primary), Fallen Angels (peripheral)
In the hallway, I met Kiba, who ga
ve me a meaningful look before approaching.
—Rias-sama wants to see you urgently —he said quietly—. There have been… developments.
—Is this about the fallen angels around the school? —I asked in a low voice.
Kiba seemed genuinely surprised.
—Can you feel them? Impressive… But no, it's about Hyoudou Issei. He's been attacked.
My heart skipped a beat. So the timeline was still moving forward, despite my interventions with Asia.
—Is he…?
—Rias-sama intervened in time —Kiba explained—. She has reincarnated him as her Pawn.
I nodded slowly. Some things were destined to happen, apparently.
During the meeting with Rias, I kept the information about Asia to myself. I listened carefully as Rias explained the situation with Issei and her plan to gradually introduce him into the supernatural world.
—The fallen angel who attacked him is still in the city —Rias remarked, studying my reaction—. We believe she has other objectives besides Issei.
—She's probably searching for Sacred Gear bearers —I replied naturally—. They're valuable to every faction.
Akeno watched me with a mixture of suspicion and curiosity.
—You know a lot for just a "hunter," Harry-kun —she commented, playing with a strand of her hair—. Almost as if you'd studied our world for years.
I shrugged, keeping my expression neutral.
—Death is a great teacher —I answered enigmatically.
Rias seemed about to press further when Koneko, who had remained silent the whole time, suddenly spoke up:
—You smell of holiness —she said, her voice monotone but her eyes sharp as blades—. Weak, but it's there. Like a church.
I cursed internally. Of course Koneko, with her nekomata senses, would detect Asia's residual presence in me.
—I've been exploring different areas of the city —I replied, keeping calm—. Including some abandoned churches. It could be that.
They didn't seem entirely convinced, but they let it pass. I wondered how long I could keep Asia hidden, and more importantly, whether I should.
When I returned home that afternoon, I found Asia praying in front of a small cross she must have brought with her. Seeing me, she smiled with that purity that made even demons want to protect her.
—Harry-san, welcome —she greeted, standing—. I made tea, if you'd like any.
Something stirred inside me. This innocent girl was at the center of a storm she didn't even understand. According to the anime, she would be manipulated, murdered, and then reincarnated as a demon, all so others could use her power.
Not this time.
—Asia —I said as I accepted the cup of tea—. I need to tell you some things about this world. Things the Church probably never explained to you.
And so, we spent the afternoon talking about the three factions, the Sacred Gears, and the complex supernatural politics governing Kuoh. I explained who Raynare was and why I was looking for her, omitting the most disturbing details of what would have happened to her in the original timeline.
Asia listened attentively, her eyes widening with each revelation.
—So… God allows these things to happen? —she finally asked, her voice barely a whisper.
I didn't have the heart to tell her the complete truth about God in this universe.
—It's complicated —I replied—. Every faction has its own agenda. Nobody is completely good or evil.
—Except you —she said with a smile—. You saved me without asking for anything in return.
System: Relationship with Asia Argento has increased significantly
Benefit: Twilight Healing now available on request
I smiled, somewhat uncomfortable with her faith in me.
—I'm not a hero, Asia. Just someone trying to survive in this world, just like you.
She shook her head, her conviction unshakable.
—God put you in my path for a reason. Maybe we don't understand His plan, but I trust Him… and you.
Her innocence was as heartwarming as it was worrisome. In this world, blind faith could be as dangerous as a renegade demon.
Night fell over Kuoh like a black velvet cloak. While Asia slept, I patrolled the surroundings of my apartment, vigilant for any threat. The System alerted me to a presence approaching:
System: High-level entity detected
Identification: Noble Demon (Gremory Clan)
Hostility: Neutral
I tensed, preparing for a possible confrontation. Moments later, Kiba landed gracefully on the railing of my balcony.
—You have interesting visitors for a human, Harry —he remarked with a smile that didn't reach his eyes.
—You've been following me? —I asked, my hand instinctively hovering near my dagger.
—Orders from Buchou —he answered sincerely—. After what Koneko detected, she wanted to make sure you weren't… complicating matters.
—You mean Asia? —There was no point in continuing the lie—. I saved her from renegade demons. Did you expect me to let her die?
Kiba studied me for a long moment before answering.
—No, but I wonder why you didn't bring her to us immediately. Unless you don't fully trust Rias-sama.
—I'd say I prefer to keep my options open —I replied cautiously—. Asia has a valuable Sacred Gear. Not everyone would want to protect her for the right reasons.
Kiba nodded slowly, as if confirming something he already suspected.
—Rias-sama is not like other demons —he said at last—. She values her servants as family.
—I know —I admitted—. But I also know she has responsibilities to her clan and her position. Sometimes strategic decisions outweigh personal feelings.
A tense silence settled between us. Finally, Kiba leapt off the balcony with the same elegance with which he had arrived.
—I trust you'll make the right decision when the time comes —he said—. For now, I'll keep your secret. But Buchou will discover it eventually.
And with that, he vanished into the night, leaving me with more worries than I had before.
System: New scenario unlocked "The Knight and The Maiden"
Imminent decisions will significantly alter the plot. Prepare for unforeseen consequences.
I sighed deeply. Things were getting complicated, and the System seemed to be enjoying it. As I gazed at the starry sky, an idea began to form in my mind. Perhaps there was another option—one that didn't involve handing over Asia, Rias, or Raynare.
But for that, I'd need to become much stronger, very quickly.
System: Special mission available "Absorption Ritual"
Objective: Use the Demon Soul Shard to unlock new powers
Warning: High risk of corruption
Reward: Random demonic ability, +500 EXP
I stared at the notification for a long time. The
risk was high, but so was the reward. With demonic power at my disposal, I could protect Asia more effectively.