A Mount & Blade Overlord, Invincible Since the Resident Evil Apocalypse

[Apocalyptic Zombies + Summoning + Mount & Blade System + Conquest + One Heroine + Game World] Li Ming is a coward who's achieved nothing, has no money, and is looked down on by his family, mocked by others, and exploited by his boss. Just when he can no longer go on, he unexpectedly enters the world of Resident Evil and activates the [Mount & Blade System]! From then on, he sets out on the path to invincibility.

“You looked down on me, huh? Just you wait! Don't bully a poor young man!”

But when he completes his mission and returns to Blue Star, monsters rain down from the heavens, destroying a civilization built over thousands of years in an instant.

In this time of crisis, Li Ming decides to step forward...

Upgradeable troop types: Police > Elite SWAT?

Delta Force > Elite Special Forces

Elite SWAT and special forces with combat abilities comparable to a Tyrant?

And they can keep upgrading: Superpowered Police > Space Police > Time-Space Police

Can I even combine cultivation techniques to get the Eight-Nine Mysteries?

You said this was a Mount & Blade System, so how are you actually...

(I don't know how to put together a synopsis, title, or cover. The beginning lays the groundwork, so the story starts a little slowly. Thanks for understanding. This work focuses on training NPCs, creating and upgrading custom troop types, and the protagonist's path to invincibility.)