Unofficially, without me knowing because it was airing on Tv, and I was too young, it's Boys Over Flowers.

Officially, It's the K2 

Opened the doors to this world with - Suspicious Partner

Boys Over Flowers in 2009

W : Two Worlds

I was new to manhwa's and  reading Noblesse & TOG . When I caught upto translation when I saw W : Two Worlds  Trailer in which MC comes from manhwa world and it drew me in.

Something about 1% (2016)

Autumn in my Heart 

Temptation of Wife (2008) watched it with my family, it's the most popular kdrama at that time. 

The OST of this drama is legendary!!!

i started the red sleeve but never finished it. but my first was I think she was pretty (also didn't finish) the first one I finished was love in the moonlight in 2022

Entered K-drama world with: Winter Sonata (2002) - Watched in 2012.

I *think* it would have been either The Empress Ki or Moon Embracing the Sun on Netflix but I can't remember which I watched first (I doubt I'm the only one to start watching c- or k-dramas during lockdown. After watching a few c-dramas I began to get a taste for historical/ political ones and thoroughly enjoyed both these titles).

Should try Pachinko

I don't really remember which one either the heirs (inheritors) or oh my ghost 

fun fact i never finished either of them 😂

Maybe it was The Legend Of The Blue Sea(2016)