This is a fairly well written story, except the girl who is probably going to become the female lead is very annoying and it would be better to make her have less interactions with the Mc. Not all stories need romance in them.
If you get confused by the synopsisthis is basically a blacksmith novel with a bit of fightning, arrogant young master, ass licking young master and ascending to immortality with his blacksmithing skills
This story has a unique plot and I'm rooting for it. The protagonist is also relatable and I love the writer's sense of description. Keep writing and keep up the good work. You have the potential of becoming a great author.