[Starting in Naruto with a Daily Login System] Chapter 27 The power of lightning at the palm of my hands

Training. Training. More training.

At this point, my life was basically one long training montage, but I wasn’t complaining. Not when every session brought me closer to something greater. My body had adapted to the ridiculous physical strain I put it through, my chakra control was sharper than ever, and my instincts? Refined to perfection.

I wasn’t just growing stronger. I was pushing past limits.

At this rate, I was Kage-level. Maybe not quite on Minato-sensei’s level yet, but definitely far beyond the average Jonin. It wasn’t even arrogance—it was just fact.

And a huge part of that? Seamless Sublimity.

That strange, passive ability that refined everything I did, making each movement, each jutsu, each fight more efficient. There were no wasted motions in my training, no stumbling through trial and error like other shinobi. Every attempt built upon the last. Every mistake was immediately corrected.

It was the ultimate cheat code for mastery.

And now? It was time to put it to use again.

“Alright, Kakashi.” Minato-sensei stood a few meters away, arms crossed in his usual calm manner. “You’ve completely mastered the Rasengan. The next step is incorporating your nature transformation into it.”

Easier said than done.

Rasengan was already ridiculous to learn. Adding elemental manipulation? That was an entirely different level of nonsense.

I held out my hand, forming a Rasengan effortlessly. The spinning sphere of chakra whirled with deadly force, its hum filling the air.

Now came the tricky part.

Lightning chakra crackled at my fingertips, feeding into the orb. Sparks danced across the surface, flickering wildly before—

BOOM.

The sphere destabilized, exploding in my palm with enough force to send me skidding back a few feet.

Obito, ever the supportive teammate, burst out laughing. “PFFFT—HAAAH! Oh man, that was pathetic!”

I dusted myself off, shooting him a glare. “I’d like to see you do it.”

Obito grinned. “I would, but I don’t want to accidentally become stronger than you.”

I resisted the urge to launch a kunai at his face. Barely.

Minato-sensei, ever patient, just smiled. “Don’t be discouraged, Kakashi. Adding an element to the Rasengan isn’t something many shinobi have ever accomplished. Keep trying.”

That was the plan.

I formed another Rasengan. But this time, I let Seamless Sublimity guide me.

Instead of brute-forcing the lightning chakra into the sphere, I adjusted—refined. I didn’t fight against the instability. I let my chakra flow seamlessly, shaping the energy rather than forcing it.

The Rasengan shifted.

For a moment, blue lightning danced within the orb, crackling like a storm waiting to be unleashed—

BOOM.

Another failure. But this time, I didn’t get launched across the field.

Progress.

I exhaled, staring at my palm. I was close.

I could feel it—just a little more refinement, a little more balance, and I would break through this wall.

And when I did…

I wasn’t just going to be strong.

I was going to be unstoppable.

A Few Days Later…

At this point, my life had become an endless cycle of login, train, fail, refine, repeat.

Day after day, I worked at it—infusing my lightning chakra into the Rasengan, letting Seamless Sublimity fine-tune every mistake. Each failure wasn’t really a failure, just another step toward the final product.

At first, the Rasengan would collapse the moment my lightning chakra entered.

Then, it lasted for a few seconds before detonating.

A day later, it became unstable, but functional.

Now?

I stood in the middle of the clearing, my body sore but my mind sharp. I had run through this process hundreds of times.

I held out my hand.

The Rasengan formed instantly, swirling in perfect harmony. The technique itself was now second nature—I could shape it as easily as breathing.

Then, I let my chakra shift.

Sparks flickered.

The blue sphere twisted, stretching outward.

Lightning wove itself into the spiraling energy, crackling through the jutsu like veins of electricity. The Rasengan didn’t explode. It didn’t destabilize. It simply transformed.

What remained in my palm was no longer a sphere.

It had elongated into a spiraling vortex of pure lightning, a spear of energy that crackled and howled like a caged storm. The air itself vibrated around it, the sheer intensity warping the space nearby.

The entire clearing hummed with power. The sky above seemed darker, charged with static. The scent of ozone filled my lungs.

This was it.

I clenched my fist, and the lightning vortex screamed in response.

Minato-sensei smiled, his eyes gleaming with pride. “Congratulations, Kakashi. You’ve created something incredible.”

Obito, who had been watching from the sidelines, gawked. “That’s not just a Rasengan anymore… That thing looks like it could punch through a mountain.”

I examined the jutsu in my palm, my expression unreadable.

This wasn’t just Rasengan with lightning anymore. It was something else entirely.

Something mine.

“…No,” I muttered. “This is just the beginning.”

The newly-formed jutsu crackled in my palm, twisting like a storm trapped within my grasp. It wasn’t just Rasengan anymore—it had evolved, transformed into something completely new.

I stared at it for a moment, the weight of its power sinking in. The spiraling vortex of lightning was sharper, wilder, more aggressive than the original technique. Less like a sphere, more like a spear.

Minato-sensei watched with his usual unreadable expression, but I could see the approval in his eyes. “Kakashi… this isn’t just an improved Rasengan. It’s something unique. Something only you could have made.”

I nodded slightly. He was right.

This wasn’t his Rasengan anymore.

This was mine.

A jutsu refined by my own hands, perfected through Seamless Sublimity’s silent guidance. It had been shaped through countless failures, adjusted instinctively at every step until it had reached its absolute peak.

I let the words slip out naturally, as if the name had been waiting for me to acknowledge it.

“Lightning Fury.”

The air around us seemed to hum in response.

Minato-sensei’s lips curled up into a slight smile. “Fitting.”

Obito, meanwhile, gawked at the sheer power radiating from the technique. “Okay, yeah, that definitely sounds like an S-rank jutsu. You sure you’re not secretly trying to become Hokage, Kakashi?”

I snorted. “No thanks. Too much paperwork.”

Rin, who had been quiet for a while, finally spoke up. “It’s incredible, Kakashi… but can you control it?”

Good question.

I had created it, sure, but could I actually use it in battle without obliterating myself in the process?

Only one way to find out.

Taking a steady breath, I flicked my wrist—the lightning spear twisted, responding instantly. It wasn’t unstable like before. It moved as if it had always belonged in my hands.

I smirked. Looks like I have my answer.

I clenched my fist, and the Lightning Fury roared as it finally dispersed into crackling sparks.

—

Life, as it turned out, wasn’t all about creating S-rank jutsu and defying the natural order of the shinobi world.

After days of intense training, my body was practically begging for a break. Seamless Sublimity made it easy to refine techniques, but even it couldn’t make my chakra infinite. Turns out, spamming an S-rank lightning spear is not energy-efficient. Who knew?

So, life went back to normal.

Well. As normal as it gets when you’re a war veteran at thirteen.

“Team Minato, your mission is to clean up Old Man Suzuki’s backyard.”

I sighed. “...Again?”

The Hokage gave me a dry look. “You should be grateful for the easy missions.”

I wasn’t.

Old Man Suzuki was a menace. His backyard was a disaster zone that somehow regenerated weeds overnight. I was convinced it was a hidden laboratory for botanical ninjutsu.

Obito groaned. “Kakashi, can’t you pull some Jonin-rank strings to get us out of this?”

“Does it look like I have that kind of power?” I deadpanned.

Minato-sensei just smiled. “Come on now, it’ll be good teamwork training.”

It wasn’t.

Obito tried using Fire Style to clear the weeds. He almost set the house on fire.

Rin tried watering the plants. She accidentally turned the backyard into a swamp.

And me? I considered running away and starting a new life in the Land of Tea.

Every now and then, we got a break from our weeding hell with C-rank missions. Escorting merchants, dealing with bandits, basic stuff.

I still didn’t go all out. No point in throwing Lightning Fury at some guy with a rusty kunai. That would be overkill, even by my standards.

But even with all the monotony, I had to admit... it was nice.

After the war, after everything, just doing normal missions, training, and eating ramen with my team—it felt like a world I had almost forgotten existed.

The peace wouldn’t last forever.

Rin’s kidnapping was just weeks away.

Madara’s plan was already moving in the shadows.

And despite everything, despite my strength, despite my knowledge of the future... I still didn’t know how to stop it.

For now, though, I pushed those thoughts away.

I had weeds to pull.