Maou-sama no Machizukuri! ~Saikyou no Danjon wa Kindai Toshi~ - Volume 9 Chapter 13

Quinn Winter is a young man from another world. One day, he is suddenly chosen to become the new Demon King. But the Demon Kingdom is in big trouble – it's losing a terrible war against the human kingdom called Gran'le.To help his people, Quinn comes up with a risky plan. He will sneak into Gran'le and learn their secrets. But things don’t go as planned. A powerful noble sponsors him, and he ends up joining Heavenward Academy, the top school for training future heroes.At the Academy, there's a big challenge called the Selection. The best students become Paladins – magic knights who fight demons. Quinn doesn’t want to become a Paladin. He is a demon king! But now, he’s stuck in the Selection… and if he wins, he’ll become the very thing he’s supposed to destroy.He started the day badly. Now, things are getting even worse.

Kain, a young teenager, accidentally lost in a Dungeon and awakened a special system. A system that allows him to continuously return to level 0, using his level to add and increase his skill points. From there, Kain began his journey to find the truth of this world, and when he took off that mask, what he saw was...

Floren, the most renowned realm of all realms, yet forgotten by all. The soul of a person from Earth accidentally crashed into this unexplored realm, ending up in a dragon egg. Transforming into a crimson dragon with the mindset of a human, Claudius was different from other dragons. He only wished to live an easy life, enjoying his lifespan of thousands of years to its fullest. However, the world is not such a forgiving place, dragging Claudius into countless struggles and death battles. Is it really possible to live a leisurely life?!

- Description from Novelupdates

My name is Qi Yuan, and I am a time traveler who now holds the esteemed title of the eldest martial brother at Seven Colours Peak. I am armed with a game jade slip capable of connecting realms across the heavens, and blessed with the ability to unveil hidden information through my discerning eyes.[A seemingly ordinary blade of grass reveals secrets of a clandestine meeting between True Man Ku Mu and Empress Dashang that transpired just three days prior.][Her name is Ruan Yixi, who appears to be your beautiful master on the surface, but she may have a deeper connection, perhaps she is even your wife.][This is Heavenly Dao of the World, a Spiritual Object renowned for its significance in Foundation Establishment][This is a lifeless planet, a potential vessel for the creation of a Golden Elixir].So my road of cultivation turns gradually strange.“Heavenly Dao? A Spiritual Object for Foundation Establishment?”“So many desolate planets, all refined into Golden Elixir!”The Heavenly Dao is used as the foundation and refining stars into Golden Elixir.I am Qi Yuan, I become the origin of all things.My name is Jiang Lingsu, a fellow disciple at Seven Colours Peak. My Senior Brother is mentally ill.He is never focused on work. Nor does he like cultivation. He only loves simulation games.Senior Brother says, “Playing games is like cultivation. It can also create a world.”One day, there is one more sun in the sky.I ask him what it is, he says, “That is my Golden Elixir!”This book is also titled 'Cultivation: The Jade Slip's Universe' and 'The Golden Elixir I Cultivated is a Planet,'