MTL - Mistress, I Was Wrong - Chapter 189 Suggest

He was only an ordinary Chinese youth. Because of the strong refusal of his soul, he unexpectedly arrived in this strange world. He ardently loved peace; yet, he had no choice but to become a Demon God. If cultivating to the peak could lose person’s human nature, then all living creatures will weep with grief, waiting to be slaughtered. Can he still remain calm after this? In the vast wilderness, a handsome youth carrying the wisdom of “Daodejing”, step by step would rise to prominence in this world. Condensing and cultivating his bloodline to the supreme. Controlling and commanding the rivers. Swallowing and spitting the sun…

Tl: 1.Daodejing also mean as “The classic of the virtue of the tao” was a book of dao by Lao tzu, a sacred text of Daoism.

- Description from Novelupdates

Kiyoshiro Takeda lived a life without purpose, drifting through his days with no direction. But one fateful moment changes everything. Now, he finds himself in a world unlike any he has ever known, given a role he never asked for. A new life, an unknown destiny, and a looming catastrophe that only he can prevent. But can someone who failed in his old life truly become the last hope?

With the Goddess’ blessing, he became a 『Divine Knight』 and founded an Empire.
As time passed, he grows older, and by the time the heavens called for him to come, the Goddess showed before him, asking for his last wish.

He wished to be reincarnated in the future.
He dedicated all his life for his people, he had no time to master his own arts.
This time, he wishes to live for himself, forging his body to the utmost limit.

The Goddess complied with his wish.
In the far future, the King shall reincarnate as the 『daughter』 of a renowned Knight family.
And, under some circumstances, she is labeled as a failure of a Knight, however——

「How convenient. I can stand on the foremost line without needing any rank. No better training than actual combat!」

Thus, the legend of the world’s strongest, most beautiful Knight Disciple (♀) has begun—

She was forced by her husband and his mistress to jump into the sea and commit suicide, only to be rescued and taken care of by the jerk's uncle for seven years.