Akagami no Shirayuki-hime
there is even an anime
I still haven't read Akatsuki no Yona but here are some with a strong female lead:
http://www.mangago.me/read-manga/claymore/
http://www.mangago.me/read-manga/dents/
* http://www.mangago.me/read-manga/hourou_musuko/ (warning: feels)
* http://www.mangago.me/read-manga/fight_on_yeo_manager/ (warning: "yaoi")
* http://www.mangago.me/read-manga/black_lagoon/
http://www.mangago.me/read-manga/yakusoku_no_neverland/
And some with 1 or more strong female character(s) that can't be called main but is/are still very important:
http://www.mangago.me/read-manga/dogs_bullets_carnage/
http://www.mangago.me/read-manga/devils_line/
http://www.mangago.me/read-manga/dorohedoro/
http://www.mangago.me/read-manga/fullmetal_alchemist/
http://www.mangago.me/read-manga/kiba_no_tabishounin_the_arms_peddler/
http://www.mangago.me/read-manga/unordinary/
Those with the * are neither fantasy nor supernatural but still good stories ;) Warning tho, romance isn't the most important part of the plot in the mangas I wrote ^^
Enjoy!
There's this one : http://www.mangago.me/read-manga/reimei_no_arcana/
I don't think it's fantasy but I think I liked the female lead in this one too :
http://www.mangago.me/read-manga/sabaku_no_harem/
Help plz!!!! Want a manga where female lead has a strong will like yona from akstuski no yona and I don't want where she can't make a decision where she can't decide which guy she wants to be with no love triangle well maybe a little but the guy gives up and I would like it if it was fantasy or supernatural sorry I'm really picky about some stuff