Path of Medicine With a System - Chapter 12: Praise, and newcomers' arrival

Defeated in war, Princess Swan, who has been relentlessly bullied her whole life and crippled by her stepmother and sister, is sent to be the bride of the King of the Beasts—Gale Stormfront—as a prize for his victory.Swan thought that the savage beast would eat her. She will be chewed until there is nothing but bones left in her.But what if Gale wants her to be a remedy for his constant rut instead?This is a tale of a crippled and timid princess and a beast king who is fated to turn into a mindless animal, desperately searching for his fated mate to cure his curse .

An ordinary (?) grandfather, Choi Chuntaek. In an effort to protect his granddaughter, he started the virtual reality game 'Arkstar.'

Then... he accidentally obtained a legendary class?

He was the continent’s strongest and most revered alchemist, Ye Zifeng. He was under one person and above millions. However, due to an unpredictable event, he had died. After his rebirth, he had become the supertrash of the Ye family and suffered disgrace. To make matters worse, he had an argument with his fiancé that led to the break off of his engagement. In this second life, he will work to change his own destiny. He vows to return to the peak of the world, trample on those who laughed at him and rewrite his legacy!

- Description from Novelupdates

Earth Immortals are cultivated from a blessed land.