Tale of a Raindrop
雨粒の小さな歴史 (original)
This is a story of a young woman and her coming of age in Japan. In the winter before her college graduation, Michiru received a letter from a girl. Apparently, they are sisters who shared the same father. The letter explained their father who has left Michiru from her birth. Even though she had never cared about him, the fact about his existence spread within her.
Starring Rei Amaya, Takashi Fujimura, Ryutaro Hirai, Tomonori Hirayama, Sosuke Ikematsu, Misaki Katano, Alan Koji, Minami Mio, Mei Nagaoka, Mizuki Nishiyama
Watch "Tale of a Raindrop" on Amazon released in 2012. It's a drama and romance movie, and has a rating of 6.7 out of 10 from Imdb which is usually fine for this kind of movie, and is currently only available for purchase or rent.