Responses
its far fetched honestly but the description mostly aligns with this
https://www.mangago.me/read-manga/beasts_of_desire/
actually now after re-reading your question this also applies
https://www.mangago.me/read-manga/bad_apple/

The bottom was blond and i think he was a con artist pretending to be a prominent figure to the top, the top is like a rich chaebol with dark(?) hair
one of the notable scene is the bottom jumping out a balcony to escape the top
the bottom is bisexual im p sure like he has no problem getting it down w people other than the top (he sleeps around to get his information)