MTL - Fairy Tail: The Nameless Grim Reaper - Chapter 300 The family of the monster...

Su Shuilian was the first legitimate daughter of a renowned embroidery family, but she was murdered by her jealous family member. After death, Su Shuilian’s soul enters an unknown female body who lives in a dynasty she had never heard of.

While trapped in the wilderness with her wolf pup companions, Shuilian picks up an assassin who was betrayed by his organization and saves him from the brink of death.

After making it out of the dangerous forest, the two travel to a small town with few inhabitants. There, they find a location with a picturesque scenery and disguise themselves as a married couple to buy a house to settle down in.

She was a girl unfamiliar to this world, and he was an infamous assassin. Journey with them as they adapt to their new life…

- Description from Novelupdates

A teenager who obtained a life simulator, with the help of the life simulator, went from an inexperienced martial artist to the peak of cultivation, seeking immortals and chasing gods, paving the way for all living beings, and eventually becoming a generation of Taoist ancestors. [Avenue is fifty, Tianyan is forty-nine, escape to one of them! Therefore, everything in the world has a chance of life! ]

Sixteen years old: You broke through the ninth-rank martial artist, in order to deter all the enemies with ulterior motives.

Two hundred years old: You broke the bondage of heaven and earth, opened the body of the gods, and witnessed the way of immortals.

Three hundred years old: You realize the nature of heaven and earth, and prove the way of heaven and immortals.

Seven hundred and eighty-six years old: You have five proofs of the immortal way, one step to the sky, and the position of the monarch.

…

After countless simulations, [You have opened up an immortal path for all sentient beings and are respected as the Taoist ancestor. ]

- Description from novelbuddy

What does it mean to be invincible?

Many Sword Gods exhaust their entire lives attempting to cultivate a single supreme sword intent, yet Yang Xiaotian has cultivated fifteen!

For millions of years, no one has been able to cultivate the Primordial Heaven Destiny, but Yang Xiaotian has cultivated fifteen of it!

Throughout countless eons, no one has been able to cultivate the Primordial Universe Holy Fruit, yet Yang Xiaotian has cultivated fifteen!

Across the vast expanse of time, only the rulers of heaven and earth could cultivate the Eternal Divine Body, yet Yang Xiaotian has cultivated not only the Eternal Divine Body but also the Primordial Heaven Destiny Divine Body, the Primordial Universe Divine Body...

This world has Fox Fairies, River Gods, Water Monsters, Great Demons and Cultivators who seek immortality.