Chapter 1: Byakugan Regression? Sorry, It's an Illusion

At Konoha Hospital, in the Department of Education...

Tsunade sat in a chair, one leg casually crossed over the other, holding an application file in her hand. She observed Takashi's uniquely different eyes with intrigue.

"Hyuga Takashi, you withdrew from your ninja squad due to your bloodline regression and applied to join the medical department to become a medical ninja?"

"Yes, I want to become a medical ninja to seek a cure for my bloodline condition," Takashi explained his reasoning calmly.

Across the entire ninja world, medical ninjas were always in short supply, even in Konoha, which prioritized their training. Tsunade was naturally pleased to see someone actively apply to the medical department.

The only regret was that Takashi belonged to the Hyuga clan but had unfortunately developed a bloodline disease.

"Can you tell me about your eyes?" Tsunade asked, clearly interested.

She was puzzled; unlike others with bloodline regression, Takashi's eyes were uniquely different. His pupils were a deep blue with a black center, like a radiant blue star — beautiful and mysterious.

Takashi calmly responded to her question: "I was injured while out on a mission with my squad. During recovery, I started experiencing sensitivity to strong light and blurred vision. After receiving treatment, symptoms of bloodline regression appeared."

People believed Takashi's Byakugan was degenerating, but they had no idea that this supposed regression was actually an evolution.

This tale began before Takashi's transmigration.

Back in his world, he and a close friend were playing a Naruto mobile game. During the first three days of a new server, there was a recharge event; by spending a bit of money, players had a chance at an epic draw with high odds of obtaining rare items. Takashi seized the opportunity, and with a stroke of luck, drew the Tenseigan on his first try.

Just as he was about to flaunt his prize to his friend, a sudden dizziness overtook him, and everything went black. He collapsed onto his sofa, unconscious.

When he awoke, he found himself in the Naruto world.

Once he recovered from his injuries and the initial activation of the Tenseigan concluded, he withdrew from his ninja squad under the guise of his bloodline illness and applied to study in the medical department.

"I approve your application," Tsunade said, "begin learning tomorrow. For now, set aside your bloodline illness and focus on studying with a clear mind."

"Understood, Lady Tsunade," Takashi replied, finally feeling relieved as his application was approved.

The reason Takashi wanted to join the medical department was simple: he didn't want to risk his life for his clan or the so-called Will of Fire. As a medical ninja, he could work at Konoha Hospital, where the clan couldn't order him to take on dangerous tasks or missions on behalf of the village.

In the ninja world, medical ninjas enjoyed relatively high earnings with a manageable workload.

Leaving Konoha Hospital, Takashi picked up some long-lasting paints, a canvas, and paper before heading home.

Unlike other ninja clans, the Hyuga clan had a peculiar layout for their living quarters. At the center was the head family estate, with other main family residences circling it, then the branch family leaders' homes surrounding those, all expanding outward.

Takashi lived in a remote area, reserved for members with low family status.

After locking his door, Takashi set down his purchases and grabbed a bottle of green paint as he headed to the bathroom.

Once he removed his forehead protector, the cursed seal of the caged bird—painted in green—was revealed.

Takashi's seal had disappeared after the first phase of the Tenseigan awakening, so the mark on his forehead was something he painted himself.

Unfortunately, the paint he had at home wore off quickly.

So Takashi had purposely bought long-lasting paint.

He also bought some art supplies to make it look like he was learning to paint.

The Tenseigan would require three phases of activation to stabilize. During this period, Takashi couldn't use its power and would need to hide in a closed room each time the activation occurred, waiting for it to finish.

Luckily, he could attribute all this to his bloodline illness.

The clan believed him without doubt, as Takashi wasn't the first in the Hyuga to experience bloodline regression.

But he noticed a change in the way they looked at him.

The Byakugan was the pride of the Hyuga clan. Bloodline regression meant losing the Byakugan and, with it, one's status and value.

Takashi, however, didn't care what they thought. A clan as corrupt, dark, and unfair as the Hyuga was unworthy of his loyalty or sacrifice.

Once he became a medical ninja, he would move out of the clan's estate.

Ignoring others' opinions didn't mean Takashi was willing to endure discrimination.

Satisfied with his painted-on Caged Bird Seal, Takashi snapped his fingers in satisfaction. "Perfect!"

With his disguise complete, Takashi went into the courtyard to begin training.

He completely ignored the clan's Gentle Fist technique.

From now on, he needed to focus on improving his chakra control to qualify as a medical ninja.

When the Tenseigan's third activation concluded, he'd be powerful enough to overturn the main family, rendering the Gentle Fist technique irrelevant.

Training exercises like tree-climbing and water-walking were easy for him, but they were only the basics of chakra control. To become a medical ninja, he had to put in continuous effort.

The next morning, Takashi packed a lunch box, along with some notebooks and pens, and made his way to Konoha Hospital.

The medical department was connected to the hospital, so he went directly there to await Tsunade's instructions.

He didn't have to wait long before Tsunade arrived, yawning, with slightly messy hair.

"Read these books and then tell me your level of chakra control. I'm really tired and don't have the energy to teach you right now," she said, promptly lying down on the table and falling asleep.

Tsunade teaching me personally?

Takashi hadn't expected to gain her favor.

Then again, at this time, Tsunade wasn't the legendary ninja she would later become; she hadn't even earned the title of one of the Legendary Sannin.

She was merely a capable medical jonin.

The books she provided were introductory ones, ideal for someone like Takashi.

Takashi picked a corner, placed his bag down, and began reading.

The book started with an overview of medical ninjas, followed by various chakra control exercises and their standard proficiency levels.

Water-walking and tree-climbing were merely the basics.

"Hmm," Takashi murmured as he read through the detailed descriptions. He realized that he already met the qualifications to study as a medical ninja.

Since the Tenseigan's first activation, his chakra control had improved significantly, and it continued to grow stronger over time.

The Tenseigan, after all, was a powerful dojutsu comparable to the Rinnegan, enhancing his abilities in various ways.

Suppressing the urge to wake Tsunade, Takashi continued reading.

Unknowingly, the entire morning passed with Takashi immersed in his books, while Tsunade slept through the morning as well. Thankfully, there were no urgent patients, so Tsunade could enjoy her rest, albeit ungracefully.

With one side of her face pressed against the table, she even drooled a little.

Takashi's mouth twitched at the sight of the damp spot on the table.

Lady Tsunade, what about your dignity and image?

If he had a camera, he'd have taken a few shots to keep as blackmail material.