Because This Is My First Life (romance, contract relationship, somehow melancholic (?))
Age of Youth (this one is not necessarily a romance drama but it has plenty of romance anyways. it is focused on friendship and "growing up". very relatable)
Reply 1988 (a family drama which is very relatable. has a good mix of funny and moving scenes - usually made me laugh and cry during the same episode)
Mr Sunshine (stunning cinematography, historical. it is a bit slow at the begining so if you try it, try at least 4 episodes)
Chicago Typewriter (friendship, romance, mix of historical and present time timeline, nice cinematography)
Movie:
The Beauty Inside (i watched this like 2 weeks ago and i think i am still not over it)