[dragontamer]

Hiromu Arakawa (Full Metal Alchemist) is a woman. EDIT: Oh, wow, that's not a "Jump" manga. Huh, well TIL... so your point stands.

CLAMP also made a scene back in the 90s / 00s by emphasizing the shear number of women in their circle. They made all sorts of manga too across all genres... even dabbling into erotica. Cardcaptor Sakura, Chobits, xxxHolic, Rayearth, the character designs for Code Geass, etc. etc.

IIRC, Cowboy Bebop's script was also written by a woman. Etc. etc. I do hear that Japan is pretty bad when it comes to gender issues but I'm really not super into the culture believe it or not (I do like Anime/Manga, but I understand that's just a subset of the culture).

[astrange]

Manga authors don’t work “for” Jump, they’re contractors and keep ownership of their work. That’s why the One Piece guy is rich unlike any of the actual artists behind the MCU.

The manga publishers work by having editors keep the creators on track every week and canceling work that loses too many readers.