jywon anon here, when l was new to their dynamic l read most of the ffs under omegaverse tag but then l discovered the beauty of canonverse jywon, so let me suggest u some !

this one is a classics nd well known : https://archiveofourown.org/works/38688189

my fav fic of them nd fav author too(if possible read all her fics even with other ships cause her characterization,scenarios nd ship dynamic r soo realistic as well as canonically on point , l would even say that it helped me understand each members personality nd dynamic within them) :
https://archiveofourown.org/works/37811599

this one made me cry so much nd it's from same author as above:
https://archiveofourown.org/works/38795106
this is canon j who will always invite won with open arms no matter what but on an unhinged level:
https://archiveofourown.org/works/44454763

non linear canonverse with won pov is my go to:
https://archiveofourown.org/works/29725473

pacific rim au with j parsing guilt nd trauma including platonic jyhoon:
https://archiveofourown.org/works/48984679

j being whipped for won, codependency due to curses in canonverse:
https://archiveofourown.org/works/44931229

zombie au (not really about zombies) but nothing too traumatic with happy ending:
https://archiveofourown.org/works/42517773

short nd sweet with catboy hybrid won:
https://archiveofourown.org/works/38360074

this one is horny:
https://archiveofourown.org/works/45137530

incomplete but must read: https://archiveofourown.org/works/39738141

sweet nd light hearted manager × idol: https://archiveofourown.org/works/30939029
read a long time ago so can't remember much but it was good, as always canon with won pov:
https://archiveofourown.org/works/41680584
these fics portrays their dynamic as l see it personally.

Please read them them when time permits nd let me know if it's to ur taste or if u already read some of these♡♡