She's a Passerby, But Can See the Protagonist's Halo - Chapter 15

"Locke transmigrated into an era where everyone had Battle Beasts. Daemons were rampant and humans were forced to build walls around their dwellings while depending on Beastmasters to keep those monsters at bay.

A surgeon accidentally got the blessings of a system, shocked the medical industry, and rejuvenated countless people.

- Description from Novelupdates

Wonderful wizards mix and match Western magic and Eastern mysticism, and become the most unexpected wizard or Taoist priest in the world.

Tom: Watch out Vijay, Tiger Tank!

Vijay: Shrink quickly, just missing a keychain, hehe…

Tom: The mummy is resurrected, run

Vijay: What are you panicking about? Come and get a corpse talisman, stop first, just squatted in the pit and forgot to bring toilet paper…

- Description from novelbuddy

Turned into a vampire with no political backing, wealth, or power, Dylan immediately tries to become the strongest there is. Facing numerous dungeon breaks and a coming invasion of unknown origin, Dylan must do everything he can to fight back. In the process, Dylan tries to make the world a better place in his way, by taking control of as much land and women as he can. Watch as Dylan amasses power and influence among monsters and humans and rises to the top in more ways than one.