If You Won't Live Off the Saintess, Why Go Undercover in the Demon Sect?

[System + trope subversion + ruthless killing + invincible among peers]

Reborn in a fantasy world, Ye Yuan has the most standard protagonist template: both parents dead, no talent for cultivation, and a Saintess as his fiancée…

Not only did Saintess Jiang Xixue refuse to break off their engagement, she also supported him for three years, showering him with countless pills and spirit weapons. She even wanted to cultivate with Ye Yuan as a dual-cultivation partner, using her innate yin energy to help open his meridians…

A wealthy fiancée? Now that's the life…

Ye Yuan had planned to give up and coast through life, but during his cultivation, someone framed him and he was invaded by baleful energy. This also awakened his System.

[Baleful Energy System]: Kill people or demons to earn Baleful Energy Points.

Baleful energy can directly increase your cultivation.

“Huh?!” Ye Yuan's eyes lit up when he saw how ridiculously powerful the System was.

With this System, wouldn't he be invincible if he joined a demonic sect?

Ye Yuan left behind a letter breaking off the engagement, then decisively turned around and infiltrated a demonic sect.

After all, only in a demonic sect could he get the most out of the System and break through at the fastest pace.

From then on, a fiend feared by every disciple appeared in the Blood Fiend Sect, one of the four great demonic sects.

“What? You dared to look at me for too long? I'll kill you!”

“What? You say righteous cultivators are idiots? Do you know I used to be one of them? I'll kill you!”

Ye Yuan's ruthless nature made even the demonic cultivators tremble with fear, and earned him a bunch of underlings.

“Brother Ye, someone said you're the fiend among fiends, killing entire families at the drop of a hat.”

Ye Yuan furrowed his brows. “Bullshit! That's a completely outrageous rumor! Who's spreading lies about me? I'll kill their whole family!”