Black Iron Magician - Chapter 40: Self-Proclaimed Demon King

“I can clear all your debts, but you have to substitute me in my marriage…”

When Liang Dou Kou was diagnosed with cancer, she formed a contract with Qin Zhi Ai to substitute her in the time she would be absent, including her marriage with Gu Yu Sheng.

Initially, Qin Zhi Ai suffered under the cold and harsh attitude of Gu Yu Sheng, who mistook her for Liang Dou Kou. But his heart gradually softened and he fell in love with her.

Just when he thought that he could live happily ever after with her, it is time for Qin Zhi Ai and Liang Dou Kou to revert their identities, and Qin Zhi Ai evaporated from Gu Yu Sheng’s life.

Months later, Gu Yu Sheng meets someone who possesses the gaze of Qin Zhi Ai who captured his heart…

One day, countless natural wormholes tore open across the Blue Star Continent, revealing gateways to countless worlds. With this discovery, humanity was thrust into an era of interdimensional conquest, waging war across realms to seize power and resources.Su Xiuyu, a seemingly ordinary high school student from Yangcheng No. 1 Middle School, lived a mundane life—until his third year, when everything changed. Awakening the mysterious **Reincarnation System**, he regained memories of a past life and the truth of his existence. He wasn’t just another student—he was a traveler, a reincarnator destined to walk the path between worlds.His journey began in the brutal Warring States Period of the Naruto world, where blood and war shaped legends. But that was only the beginning. With each reincarnation, he would step into new universes, face gods and monsters, and carve his name across the multiverse.From the shadows of history to the frontlines of cosmic battlefields, Su Xiuyu would rise, one world at a time.

Nine years ago, humankind almost perished the day monsters came out of the Cracks– aka dungeons– that appeared all over the world.When all hope seemed to be lost, a select few awakened as Hunters equipped with a System.Thanks to them, the civilization recovered faster than one would expect after the apocalypse.However, another conflict presented itself later: the more the Hunters used their powers, the quicker they lost their sanity.Fortunately, among the Awakened People, there is a group classified by the System as Guides– and only these Guides have the power to soothe the Hunters and bring them back to their senses.Sounds great, right?But what happens when a Civilian is in a relationship with a Hunter who has a high matching rate with their Guide?“Let’s break up, Wonhee.”Yep, this is what happens when your Hunter boyfriend has a 76% matching rate with his Guide.Wonhee was dumped by her long-time boyfriend because she’s just a Civilian…… or so she thought.

“Dragon-riding” Prince Craft returned to the imperial capital after traveling around. Refraining from his coronation, he received marriage proposals from each country.

Although Craft dislikes marriage, he established the “Bride Training Department” and he will marry the woman who remained at last. If it’s done at all, it’s fascinating!

In front of Craft who volunteered to be the lecturer and the referee of this training department, each lovely and perfect bride appeared one after another!

A positive female pervert-like cousin, a glamorous beast girl, a black-haired swordsman with ponytail, a blond small breasted princess and a tanned and lively girl with big breasts. These 5 girls approach Craft! A expressionless maid and a brave loli halfsister join the tumult, too!

Who does the Dora Prince choose!? How about all of them! This is the start of a harem, romantic and comedy story!!