I Transmigrated into Spirit Cage from the Start, and Became a God

(Transmigration + characters crossing back) (Multiple heroines) (Crossover fanfiction spanning multiple worlds)

Chen Yun'an is ambushed by a mysterious assassin and left on the brink of death. At that moment, the System awakens and takes him to the wasteland world of Ling Cage. By the time he returns, he will have completely turned his world upside down.

From the start, he gets the Mystic Eyes of Death Perception, and every monster he kills makes him stronger.

Kill a Spine Gu, and all stats increase by 1.

Kill a Devourer Beast, and all stats increase by 5.

Chen Yun'an becomes a god in no time.

Ran Bing: “Hey, is this guy even human?! He took out every Devourer Beast on the ship in an instant. Weren't we told they couldn't be killed?”

Mark: “He's more suited than I am to become City Lord.”

Charles: “He's an emissary sent by the Lord of Light and Shadow to save us from the apocalypse, the true savior!”

Bai Yuekui: “Only in his presence can I find the humanity I thought I had lost forever.”

Jing Nan: “Because of him, I found the courage to defy the Lighthouse's Three Great Rules.”

This book is about transmigrating through several anime worlds. The author will not only write about what the protagonist gets up to in those worlds, but also tell many stories about characters from those anime worlds crossing back into the protagonist's original world.

The worlds currently planned are Ling Cage, The Outcast, Naruto, One Piece, Jujutsu Kaisen, the Marvel series, Pacific Rim, and One-Punch Man, though the order of the story will not follow this list.

Later in the book, spiritual qi will revive in the protagonist's original world, but there will be no cultivation elements. At first, his original world will remain a normal urban power fantasy.

I'm a new writer, so please be patient with me.