I have an Apocalypse City - Chapter 322 - : The Devil’s Heart

Perhaps it is the choice of fate. As a senior otaku, Qian Lingfeng got the “steel shell system”. However, when he swept the world with the system, became a local rich man, made all kinds of beautiful women, opened a harem, and realized the ultimate fantasy of thousands of otaku, he found that things seemed far from simple!
When the end comes, biochemical zombies suddenly come down, fierce beasts are in power, bloodthirsty zerg roam to kill the world, and human lives are comparable to dirt. Where will weak human beings go in this world? Is humanity going to be extinct? Or … can an otaku save the fate of the human race?

- Description from Novelupdates

Sherlock is a new generation Dungeon Lord whose ambition is to become the greatest Devil King and building up the greatest Dungeon in the Underworld.

“Ah…” She is so tickled that she is defenseless against his attacks. “You can choose to marry me or to die!” By then you will become the first person in history to die from tickling. “If you dare to reject me, I will make sure to ravish you until you yield to me.”

The shock! An honest office worker was reborn into the body of a swindler, to think he actually became a man who does this sort of thing…

The feng shui community had always declared Lin Zhushui to be omniscient, but it seems that his only miscalculation was his destined marriage to Zhou Jiayu.

Zhou Jiayu always had a mild nature, his skin was thin and tender, and his bones, brittle and soft. He never expected that what he feared the most after his rebirth wasn’t actually provoking someone’s displeasure.

Zhou Jiayu: Before I was reborn, I had always believed I’d be a devoted socialist successor, but then I became a charlatan and even encountered a big-shot fortune-teller,

Lin Zhushui: Are you happy being with me?

Zhou Jiayu: I’m happy! So happy I could die! But, Boss, if you could just stop thinking about meals with me as a menu item every single day, I’d be even happier.

Lin Zhushui: Not possible.

Zhou Jiayu: …

- Description from Novelupdates