i would say in the first book the side characters are kind of surface level and then you get to know them more in book two
MISTBORN VS STORMLIGHT ARCHIVE | CHARACTERS
there's an intriguing romance in rhythm of war that pops up where it's like huh i wouldn't have called that but okay and that's probably my favorite one
i would say in the first book the side characters are kind of surface level and then you get to know them more in book two and then and then in book three they're like main characters almost to some degree
there are two characters who in the first stormlight book way of kings their whole thing is basically like woman stay away from me and then it's like i love you though and then like that's that's like the height of their pining for each other
there's a side character who's the sweetest side character ever and they sort of kind of have a romance in book two and it's the most i just love it so much and it's so heartbreaking



