So I'm a Dragon, So What? - Game System - Chapter 2: Kumoko!

[Interstellar+Spiritual Power+Pure Romance+Marriage First, Love After+Livestreaming+Gourmet Food+Disguises]Reborn overnight, Qu Tong cried to death; her vast wealth was gone, and she even ended up owing a billion in taxes.Stuck with a cheap husband her cousin didn't want who can't have children? Rarely comes home? And throws in an entire planet to boot?Qu Tong wondered if there could be such good fortune?She carefully guarded her full fertility value, perfunctorily yet sincerely playing the role of a big shot's dainty wife.She grew energy fruits and vegetables, fed them on schedule, and incidentally improved the food for the entire squad by taking care of their home.The Insect Clan attacked, His Highness was injured, ditching class to visit, pah! To check in.His Highness was too aloof; unable to charm him after a long time, she went online searching for strategies and even inquired about how to reasonably inherit all of her husband's wealth in the case of divorce.The next day, Si Yuting glanced at the top search trends, then looked at his guilt-ridden dainty wife and laughed, “That's difficult, considering I'm just divorced, not dead.”Well-behaved and clever in front of others, behind their backs she did nothing of the sort.When her shop was reported, she cursed everyone who dissed her in the comment section one by one and blocked them all, leaving the netizens stunned: “Who taught her to curse like that?!!”In the academy competition, the enemy lacked honor, ganging up to bully the weak; Qu Tong pulled out a potion, directly turned the tables, and kicked them all out of the competition—no one can play me for a fool.When encountering a Star Thief, Qu Tong reassured everyone, ”Don't panic, I'll go reason with them.“ Then she single-handedly drove her mecha, cornering the Star Thief: “This is a robbery, hand over everything valuable.”...One day.Qu Tong, holding her medical report, asked, “If I say I can reproduce asexually, would you believe me?”“Guess.”

With one strike of the sword, I cut through the path of life and death, and slay all those who have betrayed!......I don't want to be the sword; I want to be the swordsman.I don't want to be a pawn; I want to become the chess player.An ordinary person who insists on living his own life in this world.Unfamiliar roads lie ahead, destination unknown.As I carry on, unconsciously, it has been a journey of trials and tribulations. Behold the new world I create.

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates