I Suddenly Died and Joined the Underworld, and the Ghost Made My Sister Protect Me.

I died suddenly after working overtime. I opened my eyes and became the newest member of the Yin Division. I was picked on by evil spirits as soon as I joined the job. When I was about to lose my soul, Sister Hongling stood in front of me in red clothes and said, "Anyone who dares to touch me is seeking death!" From then on, I lay down under the quilt, practiced counterattacks, investigated the truth about sudden death, and became a god all the way from the ghost. And the ghost sister who protected me was actually the person engraved in my soul in my previous life!