Please give me historical BL manhwas

"A painter behind the curtain"
It's a masterpiece.
(Beware of the rape/sa themes, tho it is not romanticised or brushed off)

you could try Fever if you haven't yet
https://www.mangago.zone/read-manga/fever_1/

and Midnight Dweller
https://www.mangago.zone/read-manga/midnight_dweller/

https://www.mangago.zone/read-manga/eyes_clouded_by_the_tiger/
( Completed)

https://www.mangago.zone/read-manga/ghost_child/
( Completed)

https://www.mangago.zone/read-manga/go_jin_and_gam_rae/
( Completed)

https://www.mangago.zone/read-manga/night_song_mgs/

https://www.mangago.zone/read-manga/bongchon_bride/
( Completed)

https://www.mangago.zone/read-manga/a_proxy_painter/
( Completed)

https://www.mangago.zone/read-manga/yahwacheop/
( Completed but you have to search half chapters elsewhere)

https://www.mangago.zone/read-manga/paljae/