I would like to recommend queen of tears for all the wardrobe or costume related to the FL lead
You can view some of the story related to how the relationship too ?

The FL lead are coming from chaebol family
Them FL lead both huntimg at the hunting forest ground
Potrayed as smart FL
The male poor boy being in love with the FL lead
It give the same vibe with the rich setting

In QoT the female are the one having brain tumor also amnesia
Also rich female lead

While in AC the male are the one who have it
Both also dealing about marriage problem
If the rumor are true about the script from 2010
Then it was around 1 year after AC released

Chaebol,conglomerate with poor partner relationship
The gender are reverse
In QoT female are rich one, while KoL male one is the rich
Romzcom and fun as well!
Hope to see junho x jiwon next
Also yoona and kim soo hyun maybe ?

Have kids on it, pretty fun too, i think its one night stand too
Romance and a bit commedy in best wedding

Makjang
Forbidden love
Interest character
Affair
I see the intens of romance from both drama
Just more lengthnon Red Balloon

similar vibe

both actress in both drama the same

the guy are have alzheimer in wind blows
while on this movie it's amnesia

both has plot twist / unexpected pregnancy ....
both has kids
both a really mellow drama that can make you tear up

both female lost her memories
i like the romance feel of both of them

two drama definitely got me tear up as well .... rarely saw drama like this

revenge drama
eve bit modern cause release on 2022
on eve it's girl against man
but on le jun kai it's boy revenge to the girl

Both main FM and M have age gap
They have children, in BS its only amnesia
Well the story also develop quick for the romance.

the boy is clumsy, but the girls is smart n broken heart, seek someone who can never betray them
birth secret involved child