This guide will let you know how to quickly level up the blacksmith level by simply donating some specific items taken from the arms dealer.
Buy mon costing materials
The first thing you will need to do is go to Rakugai arms dealer located near the blacksmith.
Now, purchase a huge quantity of mon costing materials.
Donate items
After that, go to the blacksmith again, and head to the donate section. You need to manually mark every single item that you want to donate and confirm the donation.
Now you will find that your blacksmith level is rising up quickly.