Gekitotsu no Hexennacht - Volume 1, Chapter 6: Showing Off Justice

The celestial celestial beings who lived for more than 100,000 years were born and reborn in a small monk in a human world.
His motto: “It’s not as good as a medicinal medicine for ten years of hard work.” “Even if you practice a copper-iron bone, it’s not enough for my soldier’s attack.”

- Description from Novelupdates

Kyle woke up in a land of fantasy and magitech. The usual 'I died and woke up' bullshit, skip all that.

Except he used to be a crime lord, and society here is missing that extra kick.

Hiko Hiko, a worker, traveled through Hokage to become a member of the Uchiha, but the timeline turned out to be three years before the night of the genocide.

It coincided with the peak of the village’s suspicion and defense against Uchiha.

Factions in the family fight for power, high-level surveillance, and villagers’ misunderstandings, everything is just like the original work.

If Yan doesn’t act, the final outcome is that the whole family will be sent to the coffin by the filial son Itachi!

Death starts, it is better to ask yourself than to ask others!

Yan can only start to save himself!

Factional battles? Then cut out the faction!

High-level targets? Then change a group of high-level people!

If the internal rescue is not enough, then tear the opening from the outside!

Uchiha self-help guide begins!

Recast the glory of Uchiha!

Remember, my name, Uchihahiko!

- Description from novelbuddy