I have found that a lot of the older ones (2010,2011 +/- a few years) are more open about such things. There seems to be a shift in both dress and openness as you move towards 2016+ (made the number up, in this direction) though it is slowly changing again. I think it is a political thing. That said:
Something in The Rain - might fit. Don't know how to explain so someone else might have to.
Secret Love Affair - noona romance, mostly implied though.
What's Up Fox - noon romance, he gets her pregnant and she works for a not quite porn magazine.
Korean BLs have more of a tendency towards what you are looking for but the randiest I have seen usually come from Thailand (esp the BLs), Taiwan (again the BLs and they show a lot it) and China (more implied than shown but boy do they imply, eg. Well Intended Love).