In Different World with Naruto System (WN) - Chapter 32 Mysterious youngster

A mecha otaku is reincarnated into another world as Ernesti Echevalier (Eru). In this world there exist huge humanoid weapons known as Silhouette Knight. Dreaming of piloting those robots, Eru, with childhood friends, Archid Walter and Adeltrud Walter: together they will aim to become a Knight Runner, pilot of Silhoutte Knight.

Tang Sect, the most famous martial arts sect of all. By stealing its most secret teachings to fulfill his dreams, Tang San committed an unforgivable crime. With his ambition attained, he hands his legacy to the sect and throws himself from the fearsome “Hell’s Peak.”

But he could have never imagined that this would reincarnate him in another world, one without magic, martial arts, and grudges. A land where only the mystical souls of battle lay.

The continent of Douluo.

How will Tang San survive in this unknown environment? With a new road to follow, a new legend begins…

- Description from Novelupdates

“If I were ever reincarnated in another world, I’d be the ultimate villain.”That was the last thing Ace joked about before getting hit by an out of control ambulance–ironically, while saving his best friend.Truly, Fate has a twisted sense of humor.Now Reincarnated in a fantasy world, Ace isn’t a chosen one, a prodigy, or a hero. He’s a background nobody—an extra in a story already set in motion. Weak, talentless, and scorned by society, his new life seems doomed to follow the same path as his last: forgotten and meaningless.Destined to be killed off early in the plot, With no noble bloodline, no rare mana affinity, and a world stacked against him. Ace must rise from the ashes of his failure and break this tradegy, the only way he knows how.But Ace isn’t the same person he used to be.Armed with wit, ambition, and a twisted sense of justice, he refuses to bow to fate. If the world wants a villain, then a villain it shall get. He’ll climb the ranks, topple the so-called heroes, and make sure the world never overlooks him again.This time, the extra is writing his own story and it starts with CHAOS.But as he treads the line between fiction and reality, a bigger question looms—Was his reincarnation really an accident?

Intellectual Villages are old fashioned rural villages recreated with cutting edge technology. Those villages attract the Japanese monsters known as Youkai.

The high school boy Jinnai Shinobu lives in one of those villages and has a Zashiki Warashi living in his house. He tends to run across Youkai with unnerving frequency and this often leads to trouble for him.