age-gap romance (older ML/younger FL)

age gap between kim shin and eun tak is a big plot point

age gap between both leads as well as job gap  

many age gap couples 

many age gap couples

age gap + marriage 

doctor and new nurse age gap

20 year age gap 

leads have a big age gap 

age gap between leads

age gap + former teacher/student

10 year age gap 

romance is a sub-plot, but no eul and chairman koo have an age gap 

20 year age gap between leads' actors

romance is a sub-plot, but leads have a 17 year age gap IRL