The Great Demon King (Quick Transmigration)

(The prologue doesn't match the blurb, so you can skip it. This is a nonstandard quick transmigration story with plenty of wits and battles of wits.)

Armed with a System that's completely useless except for talking nonsense, Ling Ziluo, once a great demon, transmigrates into the bodies of scumbag fathers, scumbag masters, scumbag senior brothers, scumbag older brothers, and the like, for the sake of the pitiful protagonists who lack love. His job is to give them enough warmth in childhood and adolescence, and raise them into well-rounded modern protagonists with good morals, intelligence, physical fitness, aesthetics, and labor skills.

Although the direction of their upbringing grows increasingly strange...

Then Ling Ziluo realizes that the supporting characters who can destroy their mission worlds with a mere gesture seem to be the adopted sons and disciples he once ruthlessly abandoned after using them up, along with the brothers he falsely claimed as his own... And one after another, they have fallen into demonic cultivation because of him...

System: Host, you're on your own. QAQ

As the title suggests, this is a story about how what goes around comes around.

Also known as "A Battlefield Between Exes and Current Lovers"

"My Scumbag Master/Father Abandoned Me and Took in Another Disciple/Son, and He's So Good to Him. How Do I Kill Him Quickly and Gracefully? Urgent, Please Help"

One-on-one romance, pairing with Shao Juntang.

All about wish fulfillment, with an outrageously powerful golden finger. The protagonist is not a good person! He's especially cold-blooded and heartless, so read with caution!

But the author's bizarre values are still sound... probably. Σ(っ°Д°;)っ

Completed world: (Prologue) She Is My Only Daughter

Current world: The First Son

Anyway, please show some support. I'd love some follows and comments. Being a new author is rough. QAQ