Yuta sat there, staring at his empty slots, feeling like he'd just lost a negotiation with a vending machine.
'Okay. What's actually left?'
He pulled out a fresh sheet of paper and started listing:
AVAILABLE ABILITIES:
Shadow Clones (versatility, training boost)
Chidori (assassination technique, needs Sharingan)
Rasengan (raw power, hard to learn without good Chakra control)
Chakra Enhanced Strength (close combat buff)
Shadow Possession (crowd control)
Palm Immortal Technique (healing)
Eight Inner Gates (Taijutsu)
Various nature releases (elemental jutsu)
He stared at the list.
'None of this solves my core problem: I need chakra to USE the Sharingan so it doesn't drain me dry.'
The Nine Tails Chakra was important simply because of this. Without it, he had no idea if he would even be able to use his MS.
'To think a simple collection would come with so many terms and conditions ...'Yuta suddenly paused as a horrible thought occured to him.
"System."
[YES?]
"Are there any other caveats I should know about?"
[...]
No reply. His eyes narrowed.
"There are, aren't they?"
[Yes]
The boy felt his eyelids twitch.
"What are they?"
[Well, for starters. The Sharingan comes with a minor peresquisite]
"I thought you said everything was fine?"
[IT ISN'T FINE. JUST NOT THE SAME WAY UT WAS WITH THE LAST ONE. REST ASSURED THAT YOU WILL GAIN AND BE ANLE TO USE THE SHARINGAN. YOU JUST WON'T BE ABLE TO TURN IT OFF.]
"..."
Yuta sighed. "Elaborate."
[KAKASHI COULDN'T TURN OFF HIS SHARINGAN BECAUSE HE WASN'T AN UCHIHA. IT DRAINED HIM CONSTANTLY. THE PREREQUISITE TO AVOID THIS IS TO HAVE THE UCHIHA BLOODLINE. SO IF YOU TAKE THE MANGEKYO WITHOUT THE BLOODLINE, THEN YOU WOULD EXPERIENCE THE SAME ISSSUE.]
Yuta's eye twitched.
"So you just... weren't going to mention that?"
[YOU DIDN'T ASK.]
"WHY WOULD I NEED TO ASK?! THAT'S CRITICAL INFORMATION!"
[THE SYSTEM PROVIDES ABILITIES AS REQUESTED. OPTIMIZATION IS THE USER'S RESPONSIBILITY.]
"That's—" He stopped himself, took a breath. "Okay. Fine. Is there ANYTHING ELSE I should know before I finalize this?"
[SEVERAL THINGS.]
"...Go on."
[SECOND: WITHOUT A BLOODLINE THAT INCLUDES A CHAKRA SYSTEM, YOU WILL RECEIVE YOUR ABILITIES BUT LACK THE ENERGY TO USE THEM.]
Yuta went very still.
"...What?"
[CHAKRA IS NOT AUTOMATICALLY GRANTED. IT IS A BIOLOGICAL ENERGY SYSTEM THAT MUST EITHER BE:]
[A) DEVELOPED NATURALLY OVER YEARS OF TRAINING]
[B) INHERITED VIA BLOODLINE]
[IT IS NOT NATIVE TO THIS UNIVERSE AND YOUR CURRENT BODY DOES NOT POSSESS IT. IF YOU HAD SELECTED ONLY TECHNIQUES WITHOUT A BLOODLINE, YOU WOULD POSSESS THE KNOWLEDGE BUT NOT THE MEANS TO EXECUTE THEM.]
Cold sweat broke out on Yuta's forehead.
'I almost picked abilities I couldn't even use."
"So... I NEED a bloodline."
[CORRECT. THE UCHIHA BLOODLINE WILL GRANT YOU A CHAKRA SYSTEM AS WELL AS NATURAL AFFINITY FOR CERTAIN CHAKRA NATURES, THOUGH AWAKENING AT AGE 15, YOUR RESERVES WILL START AT THE LEVEL OF A GENIN AND GROW FROM THERE.]
"How long until I have decent reserves?"
[IT DEPENDS ON WHOSE UCHIHA BLOODLINE YOU GET. FROM SASUKE, ALTHOUGH YOU WON'T START FROM SCRATCH DUE TO YOUR AGE AND SASUKE'S TALENT, YOUR IMMEDIATE CHAKRA WOULD ONLY BE ABOUT SASUKE'S DURING HIS NINJA SCHOOL YEARS. YOUR CURRENT PHYSIQUE WHILE STANDARD FOR A REGULAR 15 YEAR OLD, IS PRACTICALLY INFERIOR TO YOUR AGE GROUP IN THE HERO COURSE AND EVEN MORE INFERIOR TO SASUKE'S AT THE AGE OF 8. YOU WILL NEED 6-12 MONTHS OF CONSISTENT TRAINING TO REACH SASUKE'S LEVEL OF CHAKRA DURING THE CHUNIN EXAMS. 2-3 MORE YEARS FOR HEBI SASUKE LEVEL CHAKRA. YOU WILL GAIN A FIRE AND LIGHTNING CHAKRA AFFINITY]
"What about Itachi?"
[EVEN WORSE. WHILE ITACHI'S BLOODLINE MAKES HIM HAVE GREATER CHAKRA CONTROL, FIRE RELEASE AFFINITY, WATER RELEASE CHAKRA NATURE, AND GENJUTSU ATTUNEMENT THAN EARLY STAGE SASUKE, HIS BLOODLINE COMES WITH A BLOOD DISEASE AND HIS CHAKRA GROWTH IS STUNTED AS A RESULT. IT WOULD TAKE LONGER TO ACHIEVE THE SAME LEVEL OF CHAKRA AND YOU CARRY THE RISK OF DYING YOUNG]
Yuta's stomach sank.
That really was significantly worse.
'So I'll be Kakashi. One big jutsu and I'm done for the day.'
"What about the chakra boost that comes with awakening the Mangekyo Sharingan? I've read theories that—"
[THAT BOOST ONLY APPLIES IF YOU AWAKEN IT NATURALLY THROUGH INTENSE EMOTIONAL TRAUMA. YOU ARE RECEIVING IT VIA SYSTEM INTEGRATION, WHICH BYPASSES THE TRAUMA-INDUCED CHAKRA SURGE.]
"...Of course it does."
[UNLESS YOU WOULD LIKE TO KILL YOUR MOTHER FIRST TO TRIGGER A NATURAL AWAKENING?]
"NO."
[THEN YOU WILL START WITH MINIMAL RESERVES.]
Yuta dragged a hand through his hair.
Think.
There has to be a workaround.
Then it hit him. If the Uchiha bloodline was something selectable, then ...
"What about the Uzumaki bloodline?"
[ELABORATE.]
"Uzumaki clan members had massive chakra reserves naturally. Naruto, Kushina, Nagato—they all had insane stamina. If I take both Uchiha AND Uzumaki bloodlines..."
[YOU WOULD POSSESS BOTH CHAKRA SYSTEMS.]
[RESULT:]
[• ABILITY TO DEACTIVATE SHARINGAN (UCHIHA TRAIT)]
[• ENHANCED CHAKRA RESERVES (UZUMAKI TRAIT)]
[• ACCELERATED HEALING (UZUMAKI TRAIT)]
[• FIRE + LIGHTNING RELEASE AFFINITY (UCHIHA TRAIT)]
[• WIND RELEASE AFFINITY (NARUTO BLOODLINE TRAIT)
[• LONGER LIFESPAN (UZUMAKI TRAIT)]
"How long until I have decent reserves with Uzumaki?"
[WITH CONSISTENT TRAINING AND AT YOUR CURRENT AGE, YOU WOULD REACH SASUKE'S LEVEL OF CHAKRA AT THE CHUNIN EXAMS IN LESS THAN THREE WEEKS. 2-4 MONTHS TO REACH SASUKE'S LEVEL AT THE BEGINNING OF SHIPPUDEN. 6-12 MONTHS TO MATCH NARUTO UZUMAKI NEAR HIS GRADUATION EXAMS FROM THE NINJA ACADEMY]
"..."
Well, all Yuta could say was the difference in Chakra was massive.
"That's... actually manageable. But still not enough to spam Mangekyo abilities."
[IN THE SHORT TERM, NO. INITIAL USAGE WILL BE LIMITED TO 2-3 ACTIVATIONS PER DAY BEFORE CHAKRA EXHAUSTION, AND THAT WILL ONLY BE AFTER THE FIRST FEW WEEKS OF TRAINING. THOUGH THAT WILL DEPEND ON WHAT YOUR INITIAL MS ABILITIES ARE AND HOW MUCH CHAKRA THEY WILL CONSUME]
Yuta grimaced. 'So I'll still be Kakashi. Just... slightly better Kakashi.'
"At least I'll have regular Sharingan abilities. Genjutsu should be insane in this world—nobody has chakra, so they won't have resistance."
[INCORRECT.]
"...What?"
[GENJUTSU BELOW MANGEKYO-LEVEL PUPIL TECHNIQUES REQUIRES THE TARGET TO POSSESS A CHAKRA SYSTEM TO AFFECT THEIR CHAKRA FLOW.]
[IN THIS UNIVERSE, ONLY YOU WILL HAVE CHAKRA. STANDARD GENJUTSU, EVEN GENJUTSU EXECUTED WITH THE HELP OF AN MS THAT IS NOT A DISTINCT PUPIL TECHNIQUE THAT DOESN'T RELY ON MANIPULATING AN ALREADY EXISTING CHAKRA SYSTEM WILL BE INEFFECTIVE AGAINST QUIRK USERS.]
Yuta stared at the interface.
"So... the Sharingan's genjutsu is useless?"
[STANDARD GENJUTSU: YES.]
[MANGEKYO-LEVEL GENJUTSU: NO. TECHNIQUES LIKE TSUKUYOMI OPERATE ON A REALITY-WARPING LEVEL THAT TRANSCENDS CHAKRA MANIPULATION. IF YOU CAN AWAKEN ONE, THEN GENJUTSU WOULD STILL BE USEFUL.]
"But I won't have enough chakra to use those frequently."
[CORRECT.]
"..."
Yuta sat back down on his bed.
'So I'm not going to be invincible. I'm going to be strong, sure. But I'll need to actually train. Actually grow. Actually be smart about how I fight.'
He looked at the ceiling.
His grand revenge plan against Stain had suddenly lost a few ... No, a lot of legs. He took a look at the list of abilities still available. Shadow Possession, Shadow Clones ... Finally, it fell on eight inner gates.
'Perhaps. ..'
[WANT MY ADVICE? DON'T EVEN THINK ABOUT IT]
"..."
[YOU'VE CLEARLY BEEN AVOIDING IT FOR A REASON. WHILE POWERFUL, THE EIGHT INNER GATES ISN'T A TECHNIQUE OR ABILITY WHERE MASTERY GRANTS POWER. IT IS MORE ACCURATE TO CALL IT A TRANSFORMATION MODE. LEARNING IT IS NOT THE PROBLEM. IT REQUIRES EXTREME, RIGOROUS, GRUELING TRAINING TO ACCUSTOM YOUR BODY TO BE CAPABLE OF WITHSTANDING THE PRESSURE BROUGHT ABOUT BY EACH SUBSEQUENT RELEASE WITHOUT RUPTURING YOUR OWN BODY. EVEN IF YOU USED UP A SLOT, YOU WOULD NEED MONTHS OF RIGOROUS, BONE BREAKING TRAINING AND ADAPTATION TO EVEN ATTEMPT OPENING THE FIRST GATE. THE UZUMAKI BLOODLINE WILL HELP BUT EACH GATE BECOMES PROGRESSIVELY DIFFICULT TO WITHSTAND AND THE POWER OF THE EIGHT GATES WILL VARY DEPENDING ON WHO USES IT. IT TOOK GUY THIRTY YEARS OF EFFORT TO REACH HIS LEVEL. SPENDING HIS SAVINGS ON MEDICINES TO INCREASE HIS RECOVERY RATE AND MORE. THE MHA UNIVERSE HAS NO CHAKRA MEDICINES TO ASSIST YOU. EVEN WITH AN UZUMAKI PHYSIQUE AND YOUR NATURAL TALENT, YOUR MAXIMUM AFTER FIVE YEARS WILL BE THE SAME AS ROCK LEE'S, THE SIXTH GATE, NOTHING MORE.]
The silence that followed was deafening.
'Maybe that's better. If I was too strong too fast, I'd get cocky. And cocky people die in Gotham—wait, wrong universe. Cocky people die in MHA too.'
He exhaled slowly.
"Alright. Final decision."
[AWAITING SELECTION.]
"Two Mangekyo Sharingan—one per eye. Uchiha Bloodline. Uzumaki Bloodline."
[SELECTION CONFIRMED:]
[• MANGEKYO SHARINGAN (LEFT EYE)]
[• MANGEKYO SHARINGAN (RIGHT EYE)]
[• UCHIHA BLOODLINE]
[• UZUMAKI BLOODLINE]
[TOTAL: 4/4 SLOTS USED.]
[FINALIZE SELECTION?]
Yuta took a deep breath.
This is it. No take-backs. No do-overs.
"Yeah. Let's do this."
[BEGINNING POWER INTEGRATION.]
[WARNING: THIS PROCESS MAY BE... UNCOMFORTABLE.]
"Define uncomfortable."
[IMAGINE SOMEONE REWIRING YOUR NERVOUS SYSTEM WITH A RUSTY SPOON WHILE YOU'RE CONSCIOUS.]
"...You could have mentioned that earlier."
[YOU DIDN'T ASK.]
"I really hate you sometimes."
[THE FEELING IS MUTUAL.]
[INTEGRATION BEGINNING IN 3... 2... 1...]
____
THE TRANSFORMATION:
The world exploded into fire.
Not metaphorical fire. Actual, searing, white-hot agony that ripped through every nerve in Yuta's body like someone had replaced his blood with molten glass.
He tried to scream.
Nothing came out.
His body seized, muscles locking as something foreign invaded his cells. It felt like being rewritten from the inside out—DNA unspooling and reweaving itself into patterns that shouldn't exist in this universe.
'This is fine,' Some distant part of his brain whispered. 'This is fine, this is Fine, THIS IS FINE, THIS IS FINE, THIS IS —'
His eyes ignited.
'....NOT FINE!!!!'
The Sharingan awakened all at once—not gradually, not gently, but like someone had jammed live wires directly into his optic nerves. Tomoe spun into existence, one, two, three—then twisted further, warping into the distinctive pinwheel pattern of the Mangekyo.
But it didn't stop there.
His chakra system formed next. Pathways carved themselves through his body, invisible rivers of energy that hadn't existed seconds ago. The Uchiha network came first—precise, controlled, flowing like electricity through copper wire.
Then the Uzumaki system slammed into him like a tidal wave.
Massive. Overwhelming. Alive.
His chakra reserves didn't just grow—they erupted, flooding his newly-formed pathways until he felt like he might burst from the pressure. It was too much, too fast, like trying to fill a teacup with a firehose.
His heart stuttered. Stopped. Restarted.
Am I dying?
[NO. YOU'RE EVOLVING.]
THAT'S NOT REASSURING.
His hair shifted color—black strands bleeding into dark red at the tips before practically bleaching into a full blown red. He had taken the Uzumaki Physique from Naruto, and unlike him, Minato's absurd golden haired genes weren't there to suppress them.
It was no surprise that the Uzumaki genetics made themselves feel quite at home. His skin flushed with sudden vitality, minor scars from childhood fading as the healing factor kicked in.
And through it all, the pain.
Yuta's fingers clawed at the bedsheets, tearing fabric. His teeth ground together hard enough to crack. Sweat poured down his face, mixing with tears he didn't remember crying.
Make it stop make it stop make it STOP—
[INTEGRATION: 47% COMPLETE.]
FORTY-SEVEN?!