Blacksmith of the Apocalypse - Chapter 51 - 51. Grumpy Hunter?

As a golden dragon raised by a human family from a young age, Noah has no particular hobbies except for cultivating kings.Though some ignorant scholars misunderstand him, labeling him as a mentor of king slayers and trampler of royal authority, over the millennia, there are also wise men who praise him as the imperial dragon and holy dragon.Moreover, the vast empire's many races regard him as the pioneer of the golden age, an immortal radiance of the empire, eagerly desiring his regency and control over the empire's authority.

Dante was an ageless warlock who had been going from one battle to another for hundreds of years.Following a chaotic encounter with an evil god, Dante unintentionally activates a contract with a demon, thrusting him into the modern world.Resolved to live a peaceful life, his intentions are halted when he finds himself in the middle of a conflict among rival mafia factions—dabbling with the ominous demonic magic that he knows best.

The journey to the martial peak is a lonely, solitary and long one. In the face of adversity, you must survive and remain unyielding. Only then can you break through and continue on your journey to become the strongest. High Heaven Pavilion tests its disciples in the harshest ways to prepare them for this journey. One day the lowly sweeper Kai Yang managed to obtain a black book, setting him on the road to the peak of the martials world.

- Description from novelupdates

A young surgeon, who is struck by a system, embarks on a bizarre journey of life.