Love your enemies
True beauty
What's wrong with secretary Kim?
Age Matters
You might like this:
https://www.mangago.zone/read-manga/the_office_blind_date/
https://www.mangago.zone/read-manga/a_relationship_of_intended_carelessness/
https://www.mangago.zone/read-manga/girlfriend_perilla/
https://www.mangago.zone/read-manga/faking_it_in_style/
https://www.mangago.zone/read-manga/lee_bom_be_mine/
https://www.mangago.zone/read-manga/masked_woman/
https://www.mangago.zone/read-manga/please_take_care_of_me_in_this_life_as_well/ (Reincarnation+Office Romance)
P.S. all of these are or seem office romance, btw
Straight manhwa romance?
and no not royalty or something
something like "Positively yours" it doesn't have to be exactly the same like not same plot or sum lol sorry its hard to explain im a really picky readerrrr