Lin Yue transmigrated to a world of immortal cultivation and got bound to a System.
The good news: he had a cheat.
The bad news: it was defective, and the operator was his former boss from his previous life.
Even worse: she couldn't read binary and kept clicking randomly, turning his top-grade spiritual root into a good-for-nothing's, then taking control of his body to sing battle hymns, perform strange rituals, or teleport him with his pants missing.
"System, where are my pants?"
"Data blockage. Unable to answer at this time."
Thanks to the System's many ways of sabotaging him, Lin Yue accidentally cultivated a poison body, poisoned elders, gassed the Demon Emperor senseless, and defeated Foundation Establishment cultivators while still at the Qi Refining stage, only to be expelled from his sect.
At death's door, he grabbed the Seventh Kill Sect Master's leg. "Master, take me in!"
And so he entered a "nest of lunatics":
His eldest senior brother could carry a mountain on his back. His second senior sister flew her sword straight into trees. His third senior brother was a tiger demon. His fourth senior brother planted mines everywhere. His fifth senior sister hid poison behind her smile. His sixth senior brother was exactly as his name suggested. His seventh senior brother played the zither and made demons dance in public squares. His ninth senior sister cared about nothing but food. His tenth junior brother's duck claimed to be the reincarnation of the Demon Emperor...
And the former boss who had been sabotaging him all along finally crawled out of the System.
"Lin Yue, I've fixed the teleportation function. I absolutely won't mess it up this time!"
"Wait, why did you teleport me to the Demon Emperor's bedroom?!"
High-martial fantasy + hilarious ensemble cast + a System and Host sabotaging each other + a war between humans and demons
Early on: Keep your head down and grow stronger. Don't let the System get you killed.
Midway: Make a name for yourself and poison the entire cultivation world.
Later: Split the sky with one sword. Whoops, I missed. The boss becomes his cultivation partner.
This is the story of a defective System and its hapless Host, who turn the cultivation world upside down alongside a gang of lunatics.