Xianxia: My Junior Sisters Are Freaks! - Chapter 233 - The Mysterious Operation of the Two of Them

In 1930s Canada, a 16-year-old landlord unlocks a System unlike anything this world has seen—a power that lets him grant supernatural abilities drawn from warriors of another realm. Barbarians, Archers, Wizards… all under his command.

Tsunderes are refreshing at times but having to chase a wife is hell. Oppress the tsunderes!

In ancient times, oppressive scums were boring old stories. It was pure crap, only for entertainment, having neither escalated or was serious plot. Everyone just enjoyed reading it.

- Description from Novelupdates

One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

Diablo Volfir, a mighty magician, was sealed for aeons due to the schemes of the 12 Gods, but 66666 years have passed since then, and he descends to earth once again!