MTL - Naruto Lineage Theory? Trash - Chapter 12

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

Like every (Isekai) protagonist, I got reincarnated after getting hit by a hyper-speed truck.

That was an empty and dark life anyway, so I was already looking forward to a decent, unknown afterlife.

But... the world had a unique thing in mind.

In this new world, I had parents, amazing ones at that.

My father was a talented mage, and my lovely mother was a sharp and cunning merchant.

Ignoring all of my weirdness, they loved me unconditionally.

This was the life that anyone would love.

Eating and cooking delicious food, practicing archery and magic, and playing with my parents.

Everything was wonderful until... those demons separated us and it left me in a ferocious forbidden forest, just to be eaten alive by beasts.

But dying wasn't even a question.

I will go back… to them.

In the middle of the night, looking at the woman in his embrace, he smiled devilishly, “With your discontentment, do you want me to continue?”

Song Yan lived a miserable life. She was born with a great fortune but her ‘ luck ‘ was ‘ snatched ‘ by her half sister . It was her fortune that she was fated to marry Fu Yusheng , the Ceo and owner of the Fu corporations . However , her half sister who was jealous of intercepted in her fate and snatched her ‘ good luck ‘ away , from then on Song Yan faced countless troubles , she met with accidents , lost her scripts and finally died after meeting a road accident .

But she was unwilling , unwilling because she loved Fu Yusheng and her son whom she left behind in the Fu family . Her soul that should have scattered and brought to Hell in front of King Yama , turned into a vicious ghost .

Only after becoming a ghost did she realise what kind of perfect deception her half sister has planned for her .

Luckily before her soul could become any more dark and become a malevolent spirit , she crosses path with a Celestial master who promises her a fresh start as long as she stays with him and learns the way of supernatural . So , Song Yan became the Celestial master’s disciple and continued to serve the Celestial master and his family as a Ghost .

After five hundred years of service , she is freed by her master and get a chance to rebirth .

She is reborn on the day she met with the car accident .

In this life she is endowed with supernatural power to see the celestial truths .

She vows to avenge herself and her son who met an unfortunate death because of her half sister .

But why is her apathetic husband who never cared about her , coming after her ?