I’m Just Solving the Case. How Did I Become an Immortal?

Having unexpectedly transmigrated to a world of immortals and martial arts, and donning this robe, Cao An is now a glorious detective in blue robes.

Humans use ghosts to wreak havoc on the world, demons act with injustice while others suffer injustice, and the conspiracy hidden for thousands of years in the three realms will eventually come to light.

But before that...

"Detective System, show me what you're capable of!"

[Congratulations on acquiring the Detective Talent: Choose one of three suspects]