Harry Potter: A Certain Ancient Rune Professor of Hogwarts (TL) - Chapter 445

The world of Anexia is rotting. The Mist has taken hold over entire continents and continues to spread, not content until the entire world is under its control.Raorka, along with his mother Zoe and father Zack, are thrust into this world after an accident. However they wake up at different parts of the world.Raorka wakes up near the Domed Town of Temuril, where inhabitants speak of the cursed dragon in the woods and the exiled witch who teaches magik...for a price.Zack wakes up near the town of Odania where the red cloaked Chianti Hunters battle against the tyrant mayor and the last Great Kingdom.Zoe awakens near the abandoned Church of Laments, where the cries of persecuted nuns echo, praying for the return of their Goddess and her blessings.Now they journey separately, desperate to reunite with each other amidst the chaos of a dying world.

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.

After breaking up with his girlfriend, he accidentally acquired a genius system and rose from there against the heavens, becoming invincible..

- Description from Novelupdates