My Mother-in-Law is Reborn [Seventies] - Chapter 213

In the near future, a space channel connecting the other world suddenly appeared on Blue Star, and a large number of other world monsters poured into the homeland where human beings depended for survival.

Human civilization has shrunk sharply and had to hide in the base city to survive.

Only warriors can lead human beings to open up living space and regain lost land.

However, martial arts requires talent, and not everyone can become a martial artist.

People with outstanding martial arts talent can not only advance quickly and break through limits, but also optimize their exercises and benefit future generations, and are admired by all mankind.

By chance, Lu Heng discovered that his martial arts talent could continue to evolve…

- Description from novelbuddy

Depressed by life, disappointed with relationships, and piles of regrets, just when Shaan was at the end of his rope, his soul was offered another shot at salvation!Starting afresh in an unfamiliar place, by sheer luck, Shaan stumbled upon a treasure that could help him hop between zombie and cultivation worlds.“There is shortage of food and resources in the apocalyptic world?”-“It’s okay, I will ship them from another world.”“You said, a zombie horde is coming?”-“It’s okay, I shall call my undead legion.”Facing countless vicious zombies alone that could bring goosebumps, Shaan stood defiantly with a crazy greed in his eyes.With amazing new powers….Turning his blissful desires into reality, becoming an overlord overnight, and buying to your heart’s content, Shaan’s new life shall be perfect.And if someone stands against his eccentric dream?Then, Shaan is sorry in advance for sending them to the afterlife![No Yuri] [No NTR][The book will slowly introduce the toxic female lead with proper pacing.]

The ordinary world is not ordinary, ordinary people are not ordinary, and safe places are not safe.

This is a story of a passer-by male protagonist who is entangled by various girls with strange hobbies or even non-human beings while surviving in the cracks and opening a harem.

- Description from novelbuddy

…but it seems pretty doable.