Elf Tensei Kara no Cheat Kenkoku-ki - Book 1 Epilogue Part 1: Founding of the Nation 『Erucy』

A man who had emerged from the world’s most secure prison—God of Death Island, known as a super-powered being called the God of Death, had grown tired of the bloody storms abroad and now, like a hidden dragon, he had returned! But due to an accident, he became the contract husband of a beautiful CEO! From then on, he ruled the city, crushed the petty and wicked, and embarked on the tyrannical journey of an urban legend!

A story about a history teacher gaming-addict with familial trauma, and a peculiar woman seemingly stuck out of time and beyond out of touch.The two have been thrust into the weird and whimsical world of Altros, a planet with divides born of very real superhuman strength cursory of an odd ranking system, and, naturally, species differences.Not exactly the best of news for our resident Scottish history teacher whose ears have changed into fox ones alongside his nine new fluffy tails.First though, Darren, or Lone, or whatever else the weird system claims he's called, has to figure out how to live with his new companion Sofia, for seemingly forever while also just barely managing to survive being stranded on a monster-infested island with a self-proclaimed former-immortal who can see despite being blind, can freely teleport, and who also, of course, seems prone to experience bouts of extreme depression.Not an ideal situation when he himself hasn't been in a great headspace for over a decade now. But hey, at least there's an incredibly expansive litRPG system to keep the both of them entertained, right? That'll fight off the fear of death, surely.

Third Miss Luo relies on her father’s power to create chaos everywhere and is notorious for bullying the weak. When she had nothing to do, she led a group of servants to the streets to flirt with beautiful and handsome boys. For Princess Qingyang, if this kind of person dared to behave wildly in front of her, she would just kill her with a single finger—until she opened her eyes again and found that she became Third Miss Luo, Luo Sheng.

- Description from Novelupdates

Ryo Tanaka, a struggling college student, works tirelessly at multiple part-time jobs to make ends meet. In a bid to earn some extra cash, he volunteers for a paid drug research study, unaware that it will alter the course of his life forever.The experiment takes a disastrous turn, leaving Ryo bedridden with a high fever for several days. But when he finally awakens, he finds himself in a world plunged into chaos. A deadly virus has ravaged the city, turning its inhabitants into ravenous, flesh-eating zombies. Streets once bustling with life now lay desolate, the remnants of civilization crumbling under the weight of the apocalypse.