System: Either Guide Souls Across or Be Erased from Existence

After Su Wanxing died suddenly at her workstation, she got a part-time job from the Underworld: helping spirits move on.

But while helping spirits move on, Su Wanxing realized that her family's deaths might not have been as simple or ordinary as she'd thought.

And every clue pointed to seventeen years ago.

What exactly happened seventeen years ago?

Su Wanxing kept searching for clues, and at last, her persistence paid off.

But could all of this really be an illusion?