My Little Sister Wore My Black Impermanence Uniform to the School Anniversary

Ghosts and monsters run rampant in this world, and humanity is on the brink of ruin.

Gu Jinran transmigrated here and awakened the Underworld System. With his own power, he founded the Heavenly Mandate Underworld!

He would cow billions of ghosts and protect the ways of humanity!

But one day, he accidentally left Black Impermanence's ghost robe at home.

His younger sister, Gu Meng, happened to mistake it for a cosplay outfit and wore it to the school anniversary celebration.

And then...

Evil spirits ran amok during the festivities!

The Black Impermanence robe Gu Meng was wearing began to move!

"Peace under heaven!"

"Impermanence claims lives, and ten thousand ghosts seize souls!"

"I am Black Impermanence. By my command, the guilty shall not escape!"

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.