I Was Banished from Heaven, Now I'm the Demon King's Stepdad?! - Chapter 3: “Glitch God Mode: Papa.exe Awakens”

Lin Jiufeng transmigrates to become the Yuhua God Dynasty’s Crown Prince but is dethroned, banished to the Cold Palace, and imprisoned there because he had released the holy maiden of their rival country.

Lin Jiufeng isn’t dejected. He has brought a sign-in system with him when he transmigrated and he would receive rewards when he signs in at different places.

Before the Cold Palace’s gates, he signs in and receives the Ultimate Heaven Slashing Sword Skill!

In the Great Council Hall, he signs in and receives the Heaven Patching Technique!

In the Empress Dowager’s palace, he signs in and receives the God of War Totem!

…

Liu Jiufeng imagines that he can quietly sign in like this until he becomes invincible. Yet who would have imagined that the Heavenly Concubine whom he secretly released would rise in rebellion and seize power after she returns to her country?

After she succeeds, her first priority is to attack the Yuhua God Dynasty to rescue Lin Jiufeng.

When Liu Jiufeng hears of this news, he’s puzzled. «Do I need you to rescue me?»

One day every human on the world suddenly receives a mail claiming to enact the World Salvation Project. Half in doubt Kurosaki Shion, a diligent university student and loner, follows the mail’s instructions, becoming one of a million Demon Kings governing his very own Domain in the new world.

*** This is a post-apocalyptic story containing many fantasy elements. It is a somewhat dark tale following Shion as he grows while aiming for the unification of the all too sudden new world. It has many game-elements bolstered by strategical thinking while at the same time providing funny moments and romantic encounters.

After three years of being married to an unfaithful wife, the multi-billionaire is chased out of his home!

Yun Che, a big shot in the doomsday, who even the militaries drooled upon, finally died in the hands of his beloved and family. After reincarnation, he wanted to live for his own!

Xing Feng, a rooting third military generation, didn’t lay his heart in the army at all. So when he turned to 20, he chose to leave the army and went into business. When the doomsday came, he accidentally met Yun Chen and started a new chapter of his life, meanwhile, his moral bottom line kept hitting a new low…

- Description from Novelupdates