You guys know any kdrama that doesn't have to do with a lot of romance (unless they're gay) but rather with fantasy, adventure, sci-fi, coming of age, crime, comedy, life and etc?

kind of new to the kdrama scene and it would really help.
Some K-Dramas that I've watched and liked, without romance (or only a little bit) :

Signal (detective, fantasy)
School 2013 (school, life, yourh)
Two Weeks (action, thriller)
Page Turner (school, music, drama)
Nightmare Teacher (school, mystery, supernatural)
Vampire Prosecutor 1 & 2 (investigation, mystery, vampire)
The Suspicious Housekeeper (family, melodrama, myster)
The Master Of Revenge (food, melodrama, mystery)
Angry Mom (comedy, family, school)
Bad Guys (action, crime, psychological)
Incomplete Life / Misaeng  (business, drama, life)
The Village : Achiara's Secret (crime, horror, mystery)
Solomon's Perjury (youth, mystery)
Awl (life, legal)
White Christmas (mystery, thriller, school)
Secret Investigation Record (sci-fi, sageuk/period drama)
The End of the World (sci-fi, medical)
Empire of Gold (business; despite its opening scene, it barely has any romance, or at least not the kind that particular scene implied)
Assembly (politics)
Pied Piper (crime)
Yoona's Street (slice of life; the drama does have some romance, but it's really not the focus of the story)
Imma say watch Chief Kim. 
1. its new 2017 drama. just finished
2. its hella funny
3. you will love it
4. it had one of the highest ratings while it was airing
Thanks for all your recommendation, I appreciate it.
You have to watch Signal ! That's the best drama ever ☺ 
There isn't so much romance in Six Flying Dragons too, if you like historical drama ^^
if you like crime/mystery/thriller or just want to take break from romcoms:
http://mydramalist.com/20378-voice

http://mydramalist.com/19684-defendant
They're both amazing in my opinion.
 
Chief Kim for office drama and some funny stuff
Signal. Gap dong. Missing Noir M. Dr Frost. Bad Guys. Hidden Identity. Voice. Misaeng. Memory. Wanted.