Because It's The First Time is also about the life of university students, twenty-some boys and girls. It shows the same problems like money (part time jobs), love life, family (dead or divorced parents). The only difference is, the main characters in Age of Youth are only girls.
Although the story Unkind Women is more like a typical melodrama, both of them show seperate storylines/lovelines of the members of a family. But in this case, the women members and not the men.