Naruto: Blade of the Sharingan

In Uchiha Nagi's view, Genya's ability to eat demons was incredibly valuable. If he could analyze it, he could clone more White Zetsu cells, devour them directly, and further complete the Uchiha genes.

Alternatively, he could trade with Orochimaru for Hashirama's cells.

Perhaps genetic completion could lead to atavism—the genes of the Sage of Six Paths.

Atavism was unpredictable. On the moon, there was a branch family of the Hyuga whose genes were an atavistic phenomenon. After transplanting a pair of pure Byakugan, they instantly transformed into Tenseigan, completely overpowering Naruto in his Sage Nine-Tails Mode. If it weren't for plot armor…

Arriving at the Butterfly Mansion—because his research required various instruments and numerous medicines—Uchiha Nagi stayed here when he didn't have specific missions.

Uchiha Nagi deftly packed his tools. Part of his kit included explosive tags, which he had made himself after asking the Demon Slayer Corps to purchase materials upon his arrival in this world. Since others couldn't use chakra, the quantity he could make was somewhat limited, and it was laborious.

Uchiha Nagi figured it was enough for now; he could just buy more directly when he returned to the ninja world. His body was undergoing a second growth spurt; by the time he was ready to return to the world of Naruto, his power might have increased to ten Kakashis.

Ten Kakashis, of course, couldn't compare to monsters like Uzumaki Naruto or Nagato, but it was sufficient when compared to other Kage-level individuals.

Besides, a battle's victor wasn't decided by chakra reserves alone.

Tailed Beasts had far more chakra than humans, yet they couldn't defeat weaker humans. Naruto's chakra was many times greater than Kakashi's, but before learning Sage Nine-Tails Mode, he still couldn't beat Kakashi.

"A demon that might possess precognitive abilities, or extremely powerful reconnaissance skills~" Uchiha Nagi frowned, looking at the intelligence report delivered by the support staff.

The report confirmed what Ubuyashiki Kagaya had said. Initially, several lower-ranked Demon Slayer Corps members investigating missing persons had themselves disappeared.

Later, two Kinoe-ranked members led a team to investigate and returned safely. But as soon as the Kinoe members left, people started disappearing again.

The opponent seemed to be employing hit-and-run tactics. Then, Tomioka Giyuu went alone to investigate, and again, no one disappeared…

"Nagi-kun, are you heading out on a mission?" A pleasant female voice called out; it was Shinobu Kocho.

"Mm, it's a rather tricky one. The opponent might not be very strong, but they're exceptionally cunning, so Ubuyashiki-san thinks I'm the only one who can handle it," Uchiha Nagi nodded.

"These are healing balms, and some antidotes. Be careful with everything. Some demons are venomous. Nagi-kun, come back safely." Shinobu handed him a small package containing many small medicinal vials and the like.

"Mm, thank you." Uchiha Nagi paused for a moment. "You be careful too. Don't rush to avenge your sister. I'll help you when the time comes."

Uchiha Nagi remembered that Shinobu, in her quest for revenge, had turned herself into a living vessel of poison to ultimately feed to her enemy. The Upper Moon Two who consumed her was successfully poisoned to death…

To avenge her sister, she had chosen mutual destruction with her foe—a girl with a tragic fate. Since he knew, Uchiha Nagi didn't mind altering her tragic end.

Hearing his words, Shinobu froze for a moment. By the time she reacted, Uchiha Nagi was already gone.

Around a nearby corner, three small figures were huddled together, whispering secrets.

"Sister, why did he say he'd help Sister Shinobu with her revenge?!"

A little lolita's head peeked out stealthily from the corner.

"Silly Kiyo, of course it's because one person can't beat an Upper Rank demon moon! It takes two people to win."

"Sumi is the silly one! Obviously, that handsome uncle likes Sister Shinobu~"

"You're the silly one! He's not old, he's a big brother, okay~"

The three little lolitas from the Butterfly Mansion were arguing animatedly, their faces flushed.

"Ara, ara~ So you were all loitering here. It seems you've been too idle lately. How about I add some special training for you tomorrow~" Shinobu's gentle voice came from behind the three little lolitas.

"Ah~ I still have herbs to dry."

"The medicine in the furnace is about to dry out."

"We'll be going now~~" +3

Watching the three little girls flee in disarray, Shinobu covered her mouth and giggled, seemingly in a very good mood. Under the sunlight, a faint blush appeared on her cheeks…

Uchiha Nagi arrived at the train station and boarded a train. Since this world had such convenient transportation, why not use it?

This time, no special incidents occurred on the train. Uchiha Nagi arrived safely at his destination, a place called Hakuba Town.

After disembarking, the two Hinoe-ranked members accompanying him briefed Uchiha Nagi on some local legends. Often, local myths arose from ignorant villagers being enslaved by demons.

According to legend, several hundred years ago, an injured white horse had appeared here and was rescued by a monk. To repay the kindness, the white horse transformed the area into a prosperous land, hence the name Hakuba Town.

However, about a dozen years ago, for some unknown reason, this fertile land angered the gods, who brought disaster upon it.

Crops failed completely, floods were rampant, and drought was followed by a plague of locusts. Fewer than one in ten of the town's inhabitants survived.

Finally, a monk living in the temple sacrificed his life to the gods, at last earning their forgiveness, and the townspeople were thus saved.

"And that's the gist of it. Later, the townspeople, to commemorate the monk, built a temple for him…"

Uchiha Nagi nodded. "Tonight, you two can move about freely. I've rigged this scroll. Open it if you encounter danger."

The Hinoe-ranked slayer nodded. His name was Heiji; the other was Ono. Uchiha Nagi had specifically requested them for this mission because he believed the demon wouldn't be able to defeat Kinoe-ranked Demon Slayers and would therefore hide. However, if there was only one slayer below Hinoe rank, the demon would likely show itself.

Demons had peculiar tastes: some preferred children, some favored young girls, and others liked physically strong humans, like Demon Slayer Corps members, whose bodies were far stronger than ordinary people due to long-term training with Breathing Styles.

Tonight, the two of them were the bait, while Uchiha Nagi would hide in the shadows, waiting for the opponent to reveal themselves—

Soon, after nightfall, every household in the town closed its doors, as if some great terror lurked in the night.

Even the electric lights in the houses were extinguished. It seemed the recent disappearances had cast a significant psychological shadow over the town's residents.

Even the police were helpless. The townspeople either had to leave or silently endure. Although the town was populous and officials tried their best to suppress the news, with someone disappearing every day or two, rumors eventually spread everywhere.

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