Ongoing dramas that I'm currently watching and absolutely love:
Taxi Driver - good action thriller, pretty original story. Lee Je Hoon's amazing in it.
Youth Of May - really, really beautiful. Beautiful story, beautiful cinematography, and it's set in the 80s (I love dramas set in the 20th century, it's kind of nostalgic, although I wasn't even born back then). But beware, it is a tragedy.
Some of my absolute favorites:
Tomorrow With You - although it has it's flaws, I watched this one two times, that's how much I love it. Also, I feel like a lot of people haven't even heard about it, it's really not mentioned often.
Radiant - an underrated masterpiece. It turns out to be something completely different than what you initially thought you were watching and that's what's amazing about it. Lots of people didn't like it because they expected a 'simple' romantic story, but it's so much more than that and is really worth watching.
Weightlifting Fairy Kim Bok Joo - it seems like your standard YA rom-com, but what's really refreshing about it is how it's stepping all over the typical drama cliches and tropes. It was also really funny.
Extraordinary You - again, a little bit cheesy, but also makes fun of the cheesy shoujo/rom-com cliches and tropes. Also, the female lead is such a loveable and funny character. Kim Hye Yoon became one of my favorite actresses after that.
Save Me - amazing thriller with an interesting plot.
Circle - again, a really interesting thriller with sci-fi elements. Also, quite underrated. It does have sort of an open ending, though.
Flower Of Evil - favorite drama of 2020.