Blackstone Code - Chapter 5:

"Bowzer, we'll stop here for the night."

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- Description from novelupdates

The Fourth Shinobi World War is over. All enemies are defeated. Finally, a long peace reigned in all countries. The Seventh Hokage laid down his arms and lost all his Youth Power. One dream, the goal for which he spent his whole life, has been achieved. His path is over. Is this really the end? Could it end so easily? What if the Savior of this World turns into an arrogant and cunning ruler?Perhaps no one would ever have been able to predict such a result. On that day, everything changed ... Countries, riches and power, the most beautiful women and their young daughters - he will subdue them all! The Seventh Hokage with the strength capable of conquering the heavens chose a different path, now he will take everything for himself and pave the way to absolute world domination!

Traveling to Los Angeles in the 1990s, Roland Allen, who had been beaten by society, thought that he would live an ordinary life in this life, but just when he was about to change careers, reincarnation began——

The number of roles is all determined by default, so they are all related households everywhere?

Sorry, as long as the hoe is swung well, there is no corner that cannot be dug.

- Description from novelbuddy