Misaeng (young adult) - awesome awesome drama and a must watch!!!
Orange Days (college) - about friendship, romance and dreams
Tokyo Friends (young adult) - female centric drama
Best Moment to Quit Your Job (young adult) - about friends with different fields of work, their issues and relationship
Not alright but its alright (webdrama, young adult) - about the mundane issues of office work
Fight My way (yiung adult) - drama about 4 friends as they are hitting young adult to adulthood, with their friendship, love life and dreams
My story of you (young adult)- spans a decade of the MCs life, from college days to firstbwork experience, to failures and struggles to success
Last Match (college) - very old drama but one of the best in their narrative of friendship, sports, rivalry, team and dreams. Though this has a some kind of weak FL
Weight Lifting fairy Kim bokjoo (college) - another drama about friendship, dreams, sports and romance
Kahogo no Kahoko (college) - FL is naive and seems weak since she was overprotected since a child, but slowly she learns about life and becomes inddependent
Twenty again (college) - MCs are not really 20's but i think its still relatable in a sense that it tackles the uncertainty, the vibe, the dreams of youth