My Black Impermanence Uniform Was Exposed by My Little Sister

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

Gu Jinran transmigrated here and awakened the Underworld System. With his own power, he founded the Underworld and ruled over billions of ghosts.

Unfortunately, he once accidentally left Black Impermanence's ghost robe at home.

His younger sister, Gu Meng, happened to take it and wear it as a cosplay outfit to the school anniversary celebration.

And then...

Vicious ghosts ran amok during the celebration!

The Black Impermanence robe Gu Meng was wearing suddenly moved!

"Peace throughout the land!"

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

"I am Black Impermanence. By my order, the guilty shall not be spared!"

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Do not imitate.