The hum of U.A.'s infirmary faded as I sat on my bed at home, the familiar scent of Inko's katsu curry lingering in the air. My body was whole-Senzu Beans (14 left) had erased the fractures and torn muscles from pushing Superpower to 30% at the USJ-but my mind churned.
The League of Villains had escaped, Shigaraki's manic grin burned into my memory. All Might's heroics saved us, but his steam-heavy form reminded me of his secret time limit.
As if answering, the system's neon interface flared to life, its ding sharp and unexpected.
System Alert: Temporary Reactivation Initiated.
Metaphysical instability resolved. Limited functionality restored for one-time adjustment. Superpower (20-30% mastery, black sparks) deemed incompatible with user's heroic trajectory. Replacing with: Saiyan Physiology (Broly Version, Dragon Ball Super: Broly, S-Tier).
All prior skills and items retained.
Lockdown resumes post-adjustment. Further reactivation pending.
My heart stopped. Saiyan Physiology? Broly? My knowledge exploded-Dragon Ball Super: Broly, the legendary Saiyan with raw, berserk power, strength that could shatter planets, speed and durability beyond human limits.
Superpower was gone-replaced by something far greater. I felt it instantly: a primal energy surging, muscles tightening, senses sharpening.
My reflection in the mirror showed green-tinted hair flickering briefly, eyes narrowing with intensity. No black sparks-now a faint aura pulsed, like Broly's iconic green glow. I wasn't just strong; I was a force of nature.
But why? Superpower mimicked One For All, tied to Mirio's path. Was the system cutting that tie, hiding me further? The "incompatible" line chilled me-did it sense All For One, or the vestiges?
I tested Saiyan Physiology: a light punch cracked my desk, effortless, no pain. Major Telekinesis lifted my bed-50kg, smooth. Dimensional Storage summoned a pipe, unchanged.
Skills like Enhanced Reflexes, Combat Instinct, and Energy Efficiency hummed, amplifying this new power. I was beyond Class 1-A now-maybe beyond All Might.
Inko knocked. "Izuku, school tomorrow! Rest up!" I hid the aura, voice steady. "Coming, Mom!" Her warmth grounded me, but this new physiology felt alien, a beast within. I had to master it before U.A.'s next challenge.
______________
Morning brought Class 1-A's usual buzz, students still rattled from the USJ. Aizawa, bandaged but upright, addressed us in homeroom.
"You survived villains. Good. Now prepare for the Sports Festival-your chance to shine for hero agencies. No slacking." His eyes lingered on me, unreadable. Did he sense my change?
Uraraka bounced over, her smile bright. "Midoriya, you feeling okay? You were incredible at USJ!" Her concern stirred my heart-she was real, not just a manga girl.
"Yeah, just sore," I lied, hiding the Saiyan shift. Kirishima slapped my back. "Dude, you're a tank! Ready to crush the festival?" I nodded, but inside, I knew: Saiyan Physiology made me a juggernaut. Bakugo's explosions, Todoroki's ice-nothing could touch me now.
The day passed in a blur-lectures, quirk theory. My senses, heightened by Saiyan Physiology, caught every detail: Kaminari's faint sparks, Momo's pen scratching, Bakugo's muttering.
Combat Instinct pinged constantly, reading classmates' movements like open books. At lunch, Tsuyu tilted her head. "Ribbit, you seem... different, Midoriya." I deflected, "Just focused on training."
After school, we trained in Gym Gamma, a concrete arena for quirk practice. Aizawa paired us for sparring. "Midoriya, Todoroki. No holding back." Todoroki's heterochromatic eyes met mine, calm but sharp. His Half-Cold Half-Hot was lethal, but I'd surpass him.
We faced off, classmates watching. Todoroki opened with an ice wave, massive and jagged. Saiyan Physiology kicked in-speed beyond Iida's, strength dwarfing Kirishima's. I dashed through, aura flaring green, shattering ice with a single punch. No strain, no fractures.
"What-?" Todoroki faltered, firing more ice. Major Telekinesis redirected shards, hurling them back as distractions. I closed the gap, Enhanced Reflexes dodging his counter.
"Don't underestimate me," he said, flames flickering on his left side-rare for him. Fire roared; I used Dimensional Storage, summoning a steel plate to block, then telekinetically slung it.
He froze it mid-air, but my Saiyan speed blitzed past, landing a controlled tap on his shoulder. Match over. Aizawa's eyebrow rose. "Impressive, Midoriya."
Classmates gaped. "He's insane!" Kaminari sparked. Bakugo growled, "Tch, showoff." Uraraka cheered, "You're unstoppable!" I marveled-I'd outclassed Todoroki effortlessly, a feat canon Izuku couldn't dream of at this stage.
_____________
That evening, Aizawa called me to his office. "Your performance at USJ and today... it's exceptional. Too exceptional." His eyes narrowed, scarf twitching. "Care to explain?"
Panic flared. Did he sense the Saiyan shift? I kept my voice steady. "Just training hard, sensei." He grunted, unconvinced but letting it go. "Sports Festival's in a week. Don't get cocky." I nodded, heart racing. The system's lockdown and swap hid me from All Might, but Aizawa's instincts were sharp.
At home, Inko's curry waited, her smile softening my tension. "You're pushing yourself, Izuku. I'm proud, but be careful." I hugged her, emotions swelling-she was my reason to fight, to control this monstrous power.
In my room, I tested Saiyan Physiology. A low jump cracked the floor-oops. Energy Efficiency kept stamina high, Analytical Mind calculating limits: strength to lift tons, speed to outrun bullets, durability to tank explosions.
Broly's version meant berserk potential, but I'd stay calm, not a rage beast. Dimensional Storage's items-Senzu Beans, Kinetic Glove, Sonic Disruptor, even the Ticket to World: Dragon Ball Super-felt trivial next to this. Why swap Superpower now? Was the system prepping me for the Sports Festival, or something bigger?
The next day, training intensified. Class 1-A sparred in teams, preparing for the festival's battles. I paired with Uraraka, her Zero Gravity syncing perfectly with my telekinesis.
We faced Bakugo and Iida-tough, but my Saiyan edge dominated. Bakugo's explosions rocked the arena; I countered with a telekinetic debris storm, then blitzed him with speed no one could match.
Iida's Engine charged; I sidestepped, landing a gentle push that sent him skidding. "Team Midoriya wins," Aizawa called.
Bakugo fumed. "How're you this strong, Deku?!" His eyes burned, but I saw respect buried there. Iida bowed. "Your growth is astounding." Uraraka high-fived me, blushing. "We're unstoppable together!" My reborn heart skipped-her friendship was a lifeline.
______________
Days blurred into festival prep. My Saiyan Physiology adapted fast-no pain, just power. In a solo session, I used Dimension Create, spending "hours" in the void throwing punches that shook the air, telekinetically juggling 50kg weights.
Emerging after 2 seconds, I felt invincible. Classmates noticed-Kaminari dubbed me "Green Spark," Mina called me "Hero Hulk." I laughed it off, but my edge was clear: no student, not even Monoma's Copy or Shinso's Brainwashing, could touch me.
The night before the festival, I lay awake, the Ticket to World: Dragon Ball Super in Dimensional Storage. A Saiyan body, a Saiyan world-tempting, but risky.
The system's brief reactivation and swap screamed purpose. Was All For One watching? Shigaraki? The League's escape meant they'd return. I clutched a Senzu Bean, its glow steadying me.
Inko peeked in. "Sleep, Izuku. You'll shine tomorrow." I smiled, hiding the beast within. Saiyan Physiology made me a legend, but her love made me human.
The system flickered, silent but ominous.
Lockdown resumed. Heroic alignment under review.
The Sports Festival loomed. I'd face Class 1-A, the world watching. With Saiyan power, I'd show them what a hero could do.