These might fit:
https://www.mangago.zone/read-manga/komada_san_wo_komarasetai/ (manga; high school setting; only FL is busty)
https://www.mangago.zone/read-manga/100_nichi_go_ni_times_times_times_suru_onna_shachou_to_shinyuu_shain/ (manga; office setting; only FL is busty)
https://www.mangago.zone/read-manga/all_s_nice/ (manhwa; college setting; femxmasc couple; both are busty; dub-con)
https://www.mangago.zone/read-manga/our_yuri_started_with_me_getting_rejected_in_a_dream/ (manga; high school setting; only FL is busty)
https://www.mangago.zone/read-manga/clandestine_affair/ (manhua; historical setting; both are busty)
https://www.mangago.zone/read-manga/drunken_my_boss/ (manhwa; medium-busty I guess)
https://www.mangago.zone/read-manga/trash_flower/ (manhwa; MC is busty)
https://www.mangago.zone/read-manga/indulging_a_crazy_beauty/ (manhua; historical setting; regression into the past; MC is busty)
https://www.mangago.zone/read-manga/yuzu_and_rika/ (high school setting; MC is busty)
https://www.mangago.zone/read-manga/kiss_me_in_the_dark_of_night/ (manhua; both seem busty)
https://www.mangago.zone/read-manga/sadistic_beauty_side_story/ (manhwa; college setting; FL is busty)
Just a lesbian who loves huge breasts and want to find some Yuri with preferably both busty main characters
The only thing is that its hard to find any that's not gross and creepy or fetishized for men
Like yeah sure big boobs are awesome but I don't want it the be the only trait the women have
The best examples I have are-
Semelparous
Gunbured x Sisters
Sekai de Ichiban Oppai ga Suki!