Sovereign of the Ashes - Chapter 253: First Wave

The story is about a man whose compulsive tendencies make it impossible for him to keep a job, and a young girl who skips school and loves insects. The two meet, come to support each other in reintegrating into society, and fall in love. There’s a problem, however: namely, the parasites in their heads.

After going bankrupt, Cheng Jinzhi woke up and found Rong Si, her nemesis, lying beside her.
When Rong Si kissed her, she realized that she had returned to twenty years ago, when Rong Si was still a pauper with a lot of debts.
This article is also called “How to Sleep the Winner of Life?” “” Queen, I think your thighs are missing me”

Content tags: entertainment circle, rebirth, happy friends, sweet text
Protagonist: Cheng Jinzhi, Rong Si ┃ Supporting roles: Xia You, Gou Yu, Fu Xinbai, Fu Qiansheng

- Description from novelbuddy

Leguna. An orphan. His life changed dramatically the day the thieves’ guild happened to select him for training and development. He would go on to become lifelong friends with a loyal mercenary, the partner of a beautiful magus who was cold as ice, the savior of a mysterious disfigured dark-elf girl with a talent for the Breath, and the unlikely caregiver for a feisty young maiden. And yet, who would be with him to the very end?

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