I Was Reincarnated as a Dungeon, So What? I Just Want to Take a Nap. - Chapter 38: An Unsustainable System.

Arcane energy weaves the world, and the ninja world is no exception.

The Book of Medivh from Azeroth contains knowledge of two worlds.

For mages, knowledge = power.

Enemy country? war? Tailed beast? Otsutsuki?

In front of the Master, tremble!

Time, for me to control; space, let me roam.

Parallel time and space, self rise, regret unfortunately, self end.

In the name of the new guardian—

Master, open a cross-border portal!

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The boutique “Pirates of Light Swordsman” has been finished, character guarantee~

- Description from novelbuddy

From the depths of a deep and blissful slumber, Chu Yu awoke to the vague sense of someone beside her. Among four of five men that she saw sleeping around her when she awoke, one in particular, caught her eye.'Who is he?'With his unrivaled elegance and the air of supremacy around him, he gazed upon the princess and asked, “What's wrong, Princess? Did you have a nightmare?”And with that, an uncontrollable chill rose up her spine that made her shiver despite the warmth of the room.Is it a joke? Or is it destiny?

Ren has never known kindness. He grew up alone in the slums, learning to survive by staying out of sight and trusting no one. One night, he stumbles into a strange tunnel and finds a hidden shrine forgotten by time.There, he sees a black cat with golden eyes and hears a voice inside his head.The shrine is more than it seems. So is the cat.As Ren is pulled into something ancient and mysterious, he must decide if he's willing to take a different step in life or keep running from the world that hurt him.Because the city doesn't care if he lives or dies, but something in the dark might.(No system, no isekai, no reincarnation, no regression, no harem. The story focuses on mystery and character development.)