Supernatural: I'm Really Just a Patient

When Lu Yuan was eighteen, his master told him he had only two years left to live.

There was no hope of a cure, so his master sent him down the mountain to enjoy life and, while he was at it, hunt ghosts and subdue demons.

Who could have guessed that right after coming down the mountain, he’d get his hands on a celestial fruit seen only once in a thousand years, one that might help him live past twenty?

But things never go as hoped. When the fruit went missing, Lu Yuan completely let himself go.

If I can’t live, then I’ll spend what time I have left teasing female ghosts, provoking female corpses, and flirting with female demons.

A stunning female ghost? Don’t be afraid. My Taoist arts are very powerful. It won’t hurt at all.

A cold and aloof fox demon? Don’t rush, either. My coin sword is razor-sharp. It’ll be over in a flash, just one strike.

And a thousand-year-old female corpse? You say blades and bullets can’t hurt you, and no spell can touch you?

Don’t worry. My physical skills are strong, too. I guarantee you’ll pass on without pain.

From then on, ghosts, demons, and corpses all passed around the same warning:

“If you meet someone on the street who says he’s sick, get away from him immediately. Run, and keep running without looking back!”

“I really am just a sick man. You don’t have to be afraid! My coin sword is so fast it won’t hurt at all.”

The extremely weak Lu Yuan wore a sickly smile.

“Don’t come any closer!”

The ghosts stared at Lu Yuan’s excited face and backed away in fear.

Which one of us is the ghost here? Somebody help!

(P.S. A sickly protagonist, decisive and ruthless, slaying demons and exorcising evil, playing the pig to eat the tiger. The setup wraps up around chapter thirty, then he lets himself go.)