its possible for anyone to learn any kind of Arts provided that they have enough Gates so there isnt an Arts that’s exclusive to one person ( its possible for an Arts to be so rare that only person in existance has it however )
but, theres something called “Trait”, which is a special properties thats unique to a person ( Azel spells can drain Ether, Zamera can transfer a piece of her consciousness into her creations, etc. )