I Have a Book of Kings

(It's not a harem, it's not brainless, it's not cool, it's slow-moving, please be careful if you mind) There is the [Thousand Ruins Tower] that has stood for thousands of years and has not fallen down, there are supernatural powers that have been passed down through the ages, and there is the [Plane Gate] that leads to the [Foreign Space]... Is he a young man who is trapped in a "dream" and cannot extricate himself, or is he a king who rules the world? Everything originated from the [Abyss of Thousand Ruins], the [Plane Door] that suddenly appeared in front of the young man in the [Foreign Space]. The endless abyss, the dark flames, the bright moonlight, the dim starlight... And the infinite but faint light. Welcome to become a player "Witness me and be crowned king!" [Fantasy] + [Time Travel] + [I Upgrade Alone] + [System-like] + [Online Game-like] (Part of the settings in this book are adapted from the comic "I Level Up Alone")