Kazura could've handled that question better by stating that iron making, or blacksmithing in general is already outside of his jurisdiction (benevolence and harvest) instead of saying "idk bro, I only know the theory"
Rant?
You really expect me to be mad about loli right after I said I've read too many manga?
What I'm saying is literally this
With my personal preference added at the end
Honestly, rather than that 'chosen one' 'got super power from powerful being' cliche,
I think a story about the MC being desperate for more power finding out a hidden skill in his class would make a better story