Choose one Drama from above you

Signal

Bubblegum
Can we love?
Let's Eat
I have a lover
The Spring Day of My Life
The World That They Live In

"Stranger"! I haven't watched the others (have "Romantic Doctor, Teacher Kim", "A Gentleman's Dignity" and "Empress Ki" on my Plan to Watch list though) but if you're into crime/investigation dramas, "Stranger" definitely won't bore you! :)

The Bridal Mask
Cruel City
Chief Kim
Mirror of the Witch
Nine: Nine Times Time Travel

None is the great thing, but I choose School 2017!

The Best Hit
Reunited Worlds
Strongest Deliveryman
Manhole
Live Up to Your Name, Dr. Heo

N/A

I've already started some of these but idk if I should continue:

City Hunter
Another Miss Oh
Reply 1994
Cunning Single Lady
Hit The Top

Romantic Doctor, Teacher Kim

A Beautiful Mind
Criminal Minds
Defendant
Duel
Stranger

Signal 

Chiacago Typewriter
Secret Forest 
Rebel: Thief who stole the people
Circle 
Tunnel

OMG, you've got a great selection there! I would go with Age of Youth

Stranger
Romantic Doctor, Teacher Kim
Circle
King2Hearts
Tunnel
Woman of Dignity

That winter the wind blows

A Gentleman's Dignity
Let's Eat
Memory
Good Doctor
Secret
The World That They Live In