Cultivation, Beginning with Burying Immortals

Xie Wujiu is a cemetery attendant who tends the sword graveyard of the Qingming Sect. There's only one thing he does in this life: bury immortal corpses. But after opening a coffin and finding a scroll called the Scripture of Burying Immortals, he discovers that the coffins in this world were never meant for the dead.

Armed with a scripture that looks more and more like a coffin the further he reads, and a coffin that grows heavier with each burial, he goes from cemetery attendant to "Lord of Burials." The righteous path calls him a demon, the tide of corpses claims him as one of their own, and when the Immortal Heaven takes off its mask, it has his own face.

Nine volumes of the Scripture of Burying Immortals, one coffin that buries the heavens.

Is he going to bury the immortals, or himself?

The Heavenly Gate has opened. Beyond it lies no immortal realm.

Only a much larger coffin.