Why! Is Every World I Wake Up In Not Me?

[Mystery anthology + Supernatural + No CP + Fantasy + Not mindless + Gradual progression]

What if one day you woke up and discovered that your body was no longer yours...

Would you be afraid?

But then someone tells you, "You don't need to be afraid, because you've already killed yourself!"

Suicide? Impossible. I would never kill myself...

When Li Zui wakes up, he finds himself in a white fog for no apparent reason. Before him is a tunnel, and there is no other way out!

The tunnel is pitch-black. He has no idea what is waiting for him up ahead...

Everything is shrouded in mystery. What is the truth behind it all??