Mostly girl centric/girl power/strong girlfriendship feel drama:
Because its my first life - not in college but the female leads are friend ever since highschool. And they get through ups and downs together like age of youth.
Tokyo Friends - probably most like age of youth in feel, though no one is in college. And feels so realistic
Ode to Joy (season 1 and 2) - female characters are living near each other kike Age of youth
Dear my friends - this is like a version of Age of youth in their senior citizen phase.
Red Teacher - drama special, very short yet very fun to watch
Others to check out: go back couple, one more happy ending, woman who still wants to marry, reply 1997, i need romance 2,