I'm glad that at least his older brother is on his side, I hope he don't die accidentally by the hands of the second and third sons who probably are teaming up to take him down, the first son already face some prejudice because he was born with Wind magic instead of Fire and the second and third sons appearances are slowly turning into villain characters and this a red flag in mangas.
I hope Van supports his big bro back when he becomes a big shot thanks to his peculiar magic (because we know he won't be a mediocre alchemist like most people in this, since he's the MC).