I've always wondered this, because it's not your typical shoujo.
Jousei is an adult romance manga. Hana yori dango is set in high school, but I feel like it's kinda a Josei.
wdyt??
I think it's based on a shoujo manga according to wikipedia:
https://en.wikipedia.org/wiki/Boys_Over_Flowers
I have a list of dramas/movies based on josei manga:
https://kisskh.at/list/45GBGxML
Yeah, what @Kez said. Hana Yori Dango was serialized in Margaret, which is a shojo manga magazine based on its demographic (teenage girls)
