Slay Demons and Seek Immortality, Kill the Fox Spirit from the Start

[Feel-Good Power Fantasy + Leveling Up + No Female Lead + Decisive and Ruthless + No Holds Barred]

The first thing Qin Chuan does after being reborn is kill a fox spirit.

Demons run rampant and humanity struggles to survive. Qin Chuan transmigrates as the son of a wealthy family, only to have his entire household wiped out by demons three days later.

After being reborn, he awakens the Demon-Slaying Quest for Immortality System. Slay living beings to obtain spiritual essence, deduce cultivation techniques, and seize supernatural abilities.

Qin Chuan cuts his way through demons and finds immortality with the System.