I have become a deity, right? The deity regrets, but I don't

[Traditional fantasy + decisive killing + no system + invincible + magic + darkness + single female protagonist + sickly]
His father is Le Tu Xian Zun, his mother is Xing Xiu Xian Zun, and his master is Da Meng Xian Zun.
With such a background, Ling Kongli should have lived a carefree life.
But as soon as he was born, he was abandoned by his biological parents and ignored.
After being rescued by his master and brought back to Tian Yan Xian Zong, he practiced for eighteen years before meeting his parents again.
Ling Kongli thought he finally had a blood relative, but his parents had already given birth to a younger brother Ling Aotian to replace him.
And all their love, including their guilt towards Ling Kongli, was invested in Ling Aotian.
The master also took Ling Aotian as his last disciple and trained him with all his strength.
In order to make up for his shortcomings in qualifications, he personally dug out Ling Kongli's supreme Taoist bone and transplanted it to him.
It was also called letting Ling Kongli re-condense the Taoist bone and break it and then stand up!
However, due to the lack of natural resources, Ling Kongli's body eventually collapsed, and his life was in danger.
But his parents and his good master always looked on coldly. After learning that Ling Kongli had no hope of rebuilding his bones, they despised him in every way!
In order to save himself, Ling Kongli could only step into the magic way to practice forbidden magic skills.
In the previous life, Ling Kongli respected his teacher and had illusions about family affection, but in the end he was branded as a demon and was besieged to death by the immortals.
In this life, Ling Kongli no longer had any concerns, and directly became a demon, incarnated as a taboo, and achieved the name of Liantian Demon Lord!
But after he broke off the relationship, his parents and master regretted it.
"Kongli, we know we were wrong, give us a chance to make up for it."
"You want to compensate me? Sure, all of you enter my Wanhun Banner!"