Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 15 - 15-25. Dungeon's Function

In a world where kingdoms rise and fall, a seasoned player unexpectedly finds himself transmigrated into the very game he once mastered—Caldera. However, his new life as a ruler comes with a crushing twist: severe debuffs and harsh restrictions on his talents make survival nearly impossible. Against overwhelming odds, he fights tooth and nail to carve out a legacy. Despite his brilliance in strategy and marvels in combat, failure becomes his ultimate fate.

This is a world where science and magic coexist.

Some people here seek powerful magic, and some seek eternal truth.

A science tyrant who came from another world, started as a little librarian, with magic in his left hand and truth in his right, kicking the door of the new century with one kick.

Some people call him the forerunner of magic, some say he is the founder of science.

Some people describe him that way.

In the new century, Blair is a symbol of evil.

- Description from novelbuddy

In a fantasy world where martial artists can split mountains and creeks with a wave of their hand and break rivers with a kick, there exists a little restaurant like this.

The restaurant isn’t large, but it is a place where countless apex existences will rush into.

There, you can taste egg-fried rice made from phoenix eggs and dragon blood rice.

There, you can drink strong wine brewed from vermillion fruit and water from the fountain of life.

There, you can taste the barbecued meat of a ninth grade supreme beast sprinkled with black pepper.

What? You want to abduct the chef? That’s not going to happen, because there’s a divine beast of unfathomable level, the Hellhound, lying at the entrance.

Oh, that chef also has a robotic assistant that killed a ninth grade supreme being with a single hand and a group of crazy women whose stomachs were conquered.

- Description from Novelupdates

Betrayed and left for dead, a soldier awakens in a world of knights and magic—but only one path is open to him.Hayden was once an elite soldier whose abilities were enhanced by the Ocularis Lens, a highly advanced mechanical eye technology.In this world that was filled with danger, Aura—a sacred energy that enhances the body and infuses weapons—is the mark of a true Knight, while magic is wielded by those born with the gift of sensing Mana.Hayden, however, is no mage. He doesn't have the ability to sense Mana, leaving him with only one option in order to survive: to become a Knight starting from a Knight's Academy!