Awaken the Sharingan, kill Muzan and open your Mangekyō!

Demon Slayer.

Fujikiyama.

Uchiha Isha touched his forehead which was broken and bleeding, and was quite shocked.

"I actually traveled through……"

In his previous life, he was a tomato coder on the blue water planet.

Due to his poor work and rest schedule and crazy internal involution, he died suddenly one night.

After that, he was reincarnated into the demon world where he is now.

However, his memories of his previous life have not awakened until now, letting him know that he is a time traveler.

"I am actually an Uchiha, and I have opened the Sharingan?"

With the awakening of his memory, Uchiha Isha quickly discovered his differences.

Or rather, the flaws.

This is the Demon Slayer World, not the Naruto World!

Where do the Uchiha and Sharingan come from in the Demon Slayer World?

But it should be said that Uchiha's Sharingan gave him the confidence to be invincible in the Demon Slayer World.

In front of the Sharingan, what is the big boss of the Demon Slayer World, Muzan?

"ah……"

When Uchiha Isha was thinking this, a scream suddenly attracted his attention.

Then he saw a swordsman was defeated by the evil spirit in front of him and was killed.

"I was so happy that I almost forgot that I was participating in the final selection of Fujiki Mountain!"

The bloody scene in front of him made Uchiha Isha's face change.

His identity after crossing over was the son of a doctor.

Due to the sudden attack of the evil spirits, both his parents were killed.

He himself survived with the rescue of the swordsman of the Demon Slayer Corps who arrived in time.

After that, he joined the Demon Slayer Corps in anger and practiced for two and a half years under the guidance of a water breathing cultivator of the Demon Slayer Corps.

After he had learned enough, he was allowed to participate in the final selection of Fujiki Mountain this time.

But because it was his first time fighting with an evil spirit, he was afraid.

This caused him to be injured by the evil spirit and was almost killed by it.

Fortunately, other swordsmen who participated in the assessment helped to save the situation, and he was lucky enough to survive again.

Even so, he fainted for a short time.

This is why the memory awakened and the Sharingan opened at this moment

"Next is your turn."

When Uchiha Isha was about to fight the demon in front of him again with the Sun Blade in hand, the ugly demon with a ferocious smile was already rushing towards Uchiha Isha.

"Illusion·Sharingan!"

Uchiha Isha did not fight the ghost with water breathing, but directly opened his Sharingan and cast an illusion on the ghost.

Although it was the first time to use Sharingan.

But after opening the Sharingan, everything about Sharingan has been reflected in his mind, making him very familiar with it. The

Sharingan with a magatama spun rapidly in Uchiha Isha's eye sockets.

Under the illusion of Sharingan, the ghost in front of him paused.

His eyes, which were originally full of cruelty and madness, also became a little dull.

Although it is the most basic one-magatama Sharingan illusion, it is enough to temporarily control this ghost whose strength is not very strong.

Seizing this opportunity, Uchiha Isha picked up the Sun Wheel Sword in his hand and chopped off the head of the ghost with a water breathing form 1·Water Surface Slash.

As the head was chopped off, the ghost quickly woke up from the illusion.

After seeing the body beside him, he was immediately horrified, not knowing what happened.

"Go to hell!"

Uchiha Isha said coldly.

The Sun Blade in his hand had been put back into its scabbard after completing the killing.

"No, I don't want to die……"

The ghost kept roaring, his face full of fear.

But before he could shout a few words, he was quickly reduced to ashes.

The head is the ghost's weakness.

At least, this is the case for ghosts who have not broken through the boundary between life and death and overcome the weakness of being beheaded by the Nichirin Sword.

Once their heads are cut off by the Nichirin Sword, their lives will also come to an end.

"This is……"

After getting rid of the ghost, Uchiha Isha was about to breathe a sigh of relief.

But the next change surprised him.

An invisible force emerged from the flying ashes that the ghost turned into, and poured into his Sharingan.

With the influx of this power, he felt that his Sharingan seemed to have improved.

Not only did his pupil power get a little stronger, but even the consumption of using the Sharingan became much less.

In addition, his physical fitness was also slightly enhanced.

Whether it was in terms of physical strength or strength, it was the same.

"Killing demons can improve my Sharingan and body?"

"Is there such a benefit?"

Uchiha Ixia soon discovered this clue.

Killing ghosts will make you stronger!

I don't know if this is the special feature of his Sharingan.

Or is it his extra special talent.

But no matter what, this is undoubtedly a big surprise for him.

If he kills enough ghosts, will his Sharingan be able to evolve rapidly?

Two magatama, three magatama, or even Mangekyo?

Thinking of this, Uchiha Ixia's eyes were full of fire.

If he wanted to kill ghosts in other places, he would have to look for them specially.

But in Fujixi Mountain, where the final selection was held, the last thing it lacks is ghosts.

There are at least hundreds of ghosts imprisoned in Fujixi Mountain.

And they are his best supplements.’

"Let me see how much these ghosts can improve my Sharingan and physique?"

Uchiha Isha was quite impatient.

Then, he took the initiative to attack and began to look for ghosts around him.

……

After searching all the way, Uchiha Isha found the ghost group.

They were six ghosts whose faces had changed a lot and looked very ugly.

At this moment, they were beating up the four swordsmen who were surrounded.

With too many people and too little food, each ghost wanted to kill a swordsman first and take his body away for a feast.

The ghosts who didn't get the food would have to look for other humans or compete with the ghosts who got the food.

"ah……"

Under the siege of two ghosts, one of the swordsmen who practiced the Breath of Wind was about to die under the claws of one of the ghosts.

""Water Breathing Type 4: Striking Tide!"

Seizing this opportunity,

Uchiha Isha, who was in the blind spot of the two ghosts' vision, took the opportunity to launch a surprise attack. Under his Water Breathing Type 4: Striking Tide

, the two ghosts were caught off guard and had no time to dodge or launch a counterattack. They were beheaded at the same time.

"No……"

"how come……"

With a roar of reluctance and anger, the two ghosts turned into ashes and reported to the underworld.

"Come on!"

After the two ghosts died,

Uchiha Isha soon felt a similar feeling as before.

Two energies surged out from the ashes of the two ghosts and sank into his Sharingan.

With the gain of these two energies, his Sharingan and physique were strengthened again.

Moreover, the improvement was even greater than before.

After all, this was the energy contained in the two ghosts.