bro i was gonna recommend akatsuki no yona then u mentioned it so i was gonna say apothecary diaries but u also read it ヽ(`Д´)ノ
these may be good?
https://www.mangago.me/read-manga/blue_glass/
https://www.mangago.me/read-manga/akagami_no_shirayukihime/
https://www.mangago.me/read-manga/mahou_tsukai_no_yome/
these two gimme similar vibes to akatsuki no yona, could just be me though
https://www.mangago.me/read-manga/fushigi_yuugi/
one of the earliest isekai id say, have that old chinese historical vibe with fantasy mixed in, cant really rmbr the whole plot anymore but it really left a huge impression on young me
https://www.mangago.me/read-manga/tendou_ke_monogatari/
still on going
https://www.mangago.me/read-manga/anatolia_story/
this one a classic
https://www.mangago.me/read-manga/kanata_kara/
another classic
just lmk if u need any reccss

Why is it so hard to find a freaking good/peak and complete shoujo-historical manga ?!?! I’m having akatsuki no yona fever, I finished it again like 2 days ago and I still haven’t found something new to read pleaseee im also done with apothecaries diaries, All I see are manhwas but what in craving for is manga