Koizora or Sky of Love is a coming age drama from Japan. It's about the bittersweet memories of your first love. Romance Tragedy is the theme so you expect somebody will die. And of course I cried a lot as in super.
This version was the TV drama. I ha vent watched the movie version yet. I also liked the main soundtrack title
アイのうた (ai no uta). It's really heart warming (though I don't understand a thing... hahahahaha).
I specifically Love the father... He really loves his family. For him, his daughters are his gems.
If you want something tear jerker... this is the one... Enjoy!!!