What to watch after IOTNBO?

Even though I watched it 6 months ago I still can't find a drama as good as IOTNBO

Looking for a romance with drama/melodrama to keep hooked from episode 1 until the end with overarching plots like murder plot in iotnbo or flower of evil (also enjoyed). 

Dramas that I really liked:

-Hotel Del Luna (#2, #1 is IOTNBO)

-Mystery Pop Up Bar

-Legend of the Blue Sea (ml too dense so i dropped at ep 10)

-Flower of Evil

-Queen of Tears (liked the fl and ml)

-Reset 

-Happiness/Kingdom 

• Come and Hug Me 
• Train