You know, he should've ripped off the guy he pawned the horse to. 😈
He could've brought back the deposit money, and said "I"m here to get back our warhorse!". Then either get a new horse, or extra gold as compensation.
It's been a while since I've read it, but isn't the entire premise that he has low talent with fire magic?
Why is he trying to become the fire guy, when he knows there are other magic he has better potential with?
Edit : just read other comments, mc is retarded, got it