What are good titles? Preferentially including romance or at least not non-existent

If there are people who know a bit more, im interested in seinen/shounen mangas with the main protagonist being female but also in other seinen/shounen mangas (of female author too) with male character as main protagonist,

does anyone know? Sorry if i couldnt ask this simple question more clearly! In short im trying to get different point of views than the usual M author, M protagonist and M audience, whilst not being a F/F/F one too

*it could be a male author as long as in this particular case then the protagonist is female

Mahou Tsukai no Yome
Gekkan Shoujo Nozaki-kun
Emma
Koi wa Ameagari no You ni

Also... Male Demographic with Female Author category exists...

~4400 manga completed
~1700 ongoing...

Ty very much. Most of that category usually has male protagonist though I guess. More interested in female protagonist in this specific case tbqh, but not mandatory as long as the suggestions are ones that you conaidered very good!

Not female protagonist: Birdmen, Dungeon Meshi, Gin no Saji

The Promised Neverland has a male author, but a female artist and protagonist, don't know if it fits.

Oh theres also "male demographic with female lead" etc, interesting. Too bad not all mangas have the tags

@Oniluap no no thanks a lot for the attention, i appreciate all suggestions! Especially cos my original post is too lengthy and confusing, not even i have the patience to re read that

I mean... You can't go wrong with Aki Eda in particular works like:
Bonnouji
Wizard's Soul - Holy War of Love
Koi wa Hikari
Wake up please, Ms. KUSAKABE

Apart from that, the categories stated by others here will help you

in need of romance?
uncommon, sad, sweet

Kyou no Cerberus
Otoyomegatari
Gisèle Alain
Any Shounen by Takahashi Rumiko

Seconding Gisèle Alain, Gekkan Shoujo Nozaki-kun, and Birdmen.

Surprised no one mentioned either Kekkaishi or Kimetsu no Yaiba yet (and of course the ever popular Full Metal Alchemist). All male protagonists though. And no romance in Kimetsu no Yaiba (as of yet).

Also, since someone mentioned Kui Ryoko, Tsubana is another female mangaka who does off-the-wall, quirky seinen stuff (Dainana Joshikai Houkou, Mikake no Nijuusei, Wakusei Closet, etc.). All female protagonists too. (But no romance.) Ditto for Kyou Machiko (Mikako-san, Mitsuami no Kami-sama). And Tana Kanoka is more philosophical, but her stuff is worth a read too, especially Sumikko no Sora-san and Tabi to Michizure. Again, very little romance though.

Oh, and Helck is written by a woman. It's an action fantasy shounen with a female co-protagonist. YMMV on how much romance there is here.

Toume Kei also writes a lot of seinen. My favorites from her are probably Acony, Genei Hakurankai, Momonchi, and Mahoromi - Jikuu Kenchiku Genshitan.

If you're fine with 4koma, Kiyuduki Satoko's Shoulder-a-Coffin Kuro and GA are both excellent. No romance though.

Arte might also be worth a read. And Butter!!! As well as the singularly beautiful and uplifting Saturn Apartments.