Kakashi Masters All Elements, Rewrites the Ninja World for Rin!

The next morning.

Boom boom boom~

Kakashi knocked on Minato's door.

After reviewing yesterday's lightning duel (and a near-death experience courtesy of nature's wrath), he realized his weakness—reaction speed.

Whether it was Flying Thunder God or Chidori, both demanded inhumanly fast reflexes in high-speed combat.

Sure, he could brute-force through it with Lightning Style Armor and Mitotic Regeneration. But doubling down on chakra consumption and playing chicken with his own lifespan? Not ideal. He didn't want to survive the final battle just to die from early retirement via old-man syndrome at 20.

Improving his reaction speed was the safest—and least suicidal—option.

Squeak~

The door creaked open, and Kushina appeared in loose pajamas.

"Oh, it's Kakashi!"

Before he could say a word, Kushina tackled him into a hug, arms and… other parts… smothering his face.

"Um… Kushina-san... I can't breathe…"His voice was muffled under the attack of two… soft forces of nature.

"Thank you for saving Minato!" she said warmly.

"Hey, it's nothing. Just the usual student saving his teacher from annihilation. You know—school spirit."

Kakashi gave a sheepish grin, scratching the back of his head.

"Come in, come in! Minato said he wants to teach you a new jutsu as thanks!"

Kushina grabbed his wrist and pulled him in like a prize she just won.

"Minato, Minato! Look who's here!"

A groggy voice responded from the bedroom.

"Oh, it's Kakashi. Come in and sit."

Minato stepped out, hair a bit ruffled, wearing matching couple pajamas.

Kakashi blinked."...Am I interrupting something? Should I come back when the lovebirds aren't nesting?"

Kushina rolled her eyes. "Please. Sit down. I'll make breakfast!"

"Please don't!"Minato and Kakashi shouted at the same time.

An awkward silence.

Then—

"I mean… let's cook together! I've been working on my omelet technique," Kakashi offered, diving toward the kitchen like a man escaping certain death.

Kushina shrugged and went to change.

Inside the kitchen:

"Kakashi, what brings you here so early?" Minato asked, handing him an apron.

"I need training methods to improve my reaction time. Preferably ones that don't end with me being electrocuted by the sky."

Minato raised an eyebrow, impressed. "Straight to the point. Good. After breakfast, we'll head to the training grounds. I'll show you personally."

Then he glanced at Kakashi's knife work. "You cut vegetables like a seasoned housewife. Did I miss something?"

"When I'm bored, I cook. Keeps the hands sharp, the soul fed, and the risk of starving to death low."

Before long, a full spread of home-cooked dishes was laid out.

"Wow, smells amazing!" Kushina beamed, sitting down. "Did you really make these?"

"Kakashi did most of it," Minato said, grinning.

"Impressive! These taste like something from a family restaurant! You're almost as good as Minato!"

"Almost?" Kakashi sighed dramatically. "So close to greatness."

The three of them enjoyed a warm, simple breakfast together.

Later, at Training Ground Seven—

Minato formed several hand seals and created shadow clones, which began laying traps throughout the forest.

"Put this on."

Minato handed Kakashi a ridiculous frog-themed blindfold.

Kakashi held it up. "We robbing a candy store, or am I joining a frog cult?"

"Neither. This will help you sharpen your other senses."

Minato's tone shifted into teacher mode.

"Vision has limits. When you rely on your eyes, it delays reaction. The moment you see danger, the signal travels to your brain, and by then—it's too late."

"Great. So instead of seeing the kunai, I feel the kunai. Revolutionary."

Minato ignored the sarcasm and continued.

"You'll need to dodge kunai attacks without sight. This will hone your sixth sense—your instincts."

"Wonderful. Getting stabbed, but with a purpose."

Thus began the month of pain.

Every day, Minato hurled kunai at Kakashi from every direction. And every day, Kakashi got bruised, battered, and nearly impaled.

But Kakashi didn't complain.

Okay, maybe internally, he ranted like a retired war veteran with a vendetta against gravity. But outwardly, he took every blow with calm sarcasm and stubborn focus.

To speed things up, he started blindfolding himself outside training hours, navigating Konoha like a blind swordsman. It got to the point where Rin nearly cried when she saw him.

"Kakashi! Are your eyes okay?! What happened?!"

"…I'm training."

She didn't believe him until he sidestepped a falling branch and caught a kunai midair.

Of course, he replaced the frog mask with a sleeker black cloth by then. He had standards.

A month later.

Kakashi stood blindfolded in the middle of the training ground.

Swish!

Kunai flew toward him from three directions. A tree blocked his path ahead.

Kakashi didn't panic.

He raised his foot, ran up the tree, and launched himself off its top.

As he landed on a branch, a new trap activated—sharpened wooden stakes dropped from above, whistling through the air.

"Seriously? Wooden spears? What is this, ninja Hunger Games?"

Kakashi twisted midair, spun sideways, and slipped through them like a ribbon in the wind.

He landed, dodged a final barrage of kunai, and stood still at the edge of the clearing.

Only then did he remove his blindfold.

Minato appeared moments later, landing softly in front of him.

"Well done. Your performance is exactly what I was hoping for."

He looked proud.

This student of his… was as hardworking as Might Guy and as talented as the White Fang himself.

If Kakashi kept progressing like this…

He wouldn't just match his father's legacy.

He'd surpass it.