korean dramas that are hidden gems or not well known? (any genre)

Hi, it would be nice if you guys could recommend me a K-Drama that is underrated or a hidden gem.
I've been looking for a K-Drama with a random/unqiue plot that is unlike the main romance, action and thriller ones.

Thanks for the future replies!!

Possibly...

• L.U.C.A.: The Beginning 
• Psychopath Diary 
• Pumpkin Time 
• Zombie Detective 
• The Sound of Magic 
• The School Nurse Files 
• Missing 9 
• Duel 
• Night Watchman's Journal 

Avengers Social club

Amanza

Chicago Typewriter

Class of lies

Juvenile Justice

Hot Stove League

Hello,ME

Live

Life on Mars

Miss HammurabI

Misaeng

Psycopath Diary

Search WWW

+1 School Nurse Files & The Witch's Diner 

• Lie After Lie - Never heard of this, found it by accident and it was pretty interesting 
• The Veil - Seemed to have picked up a bit in popularity but I basically don't ever hear about it. It's amazing tho
• Bloody Heart - Well-crafted and thrilling historical politics
• Miraculous Brothers - Sci-fi mystery that's very interesting so far  

• Missing: The Other Side
• The Guest
• The Kidnapping Day
• Miraculous Brothers
• Strangers From Hell
• Navillera
• Move to Heaven
• Beyond Evil
• King of Pigs

(I'm not saying quite a few of these aren't well-known and loved; I'm just going based on the ones that stuck in my mind and felt a bit different.)

Night Has Come 

• Business as Usual (BL)
• Our Blooming Youth 
• Let Free the Curse of Taekwondo (BL)
• The Witch 
• Moon in the Day 
• Sing My Crush (BL)

Best chicken

Lets eat 2