A gray fog that swallowed no one shrouded the city, and young Lin Yan was forced to be involved in the fate of two worlds.
He is the gatekeeper, with flesh and blood as his gate, and his family as his heart.
The mortal enemy he once thought was not a demon, but a visitor from the Mist Realm who longed to return home.
When the masterless shadow breaks through the boundary, when the balance is on the verge of being shattered, the former opponents can only fight side by side.
This time, it's not about fighting or conquering,
Just to keep the light of the world and the answer to the coexistence of the two worlds.
He never guards a door,
It is a whole warm world.
Purpose: Use yourself as a door to protect your loved ones and daily life.