I'm a Living Person, and You Give Me the System to Counterattack the Underworld?

[On your 21st birthday, you went out and got lucky, but didn't travel through time.]

[Because you were deliberately killed, you couldn't get rid of your obsession and became a lonely ghost.]

...

[Ding, the underworld counterattack system is activated!

Start the counterattack from a lonely ghost!]

Qin Feng: ???

I'm a living person, when did I become a ghost?

This system, is it sure that it's not a bug? ?