A Letter to Momo (ももへの手紙) is a 2011 Japanese anime drama film produced by Production I.G and distributed by Kadokawa Pictures. The film was written and directed by Hiroyuki Okiura and stars an ensemble cast featuring Karen Miyama, Yūka, Toshiyuki Nishida, Chō and Kōichi Yamadera. In A Letter to Momo, 11-year-old Momo Miyaura moves with her mother to a small island town after her father dies. When she arrives, she encounters three goblins that others cannot see who help her to cope with the loss of her father and the changes in her life.
A Letter to Momo premiered at the 2011 Toronto International Film Festival in Toronto, Canada on September 10, 2011 and was released on April 21, 2012 in Japan.
Plot
Following the death of her father Kazuo, Momo Miyaura and her mother Ikuko travel from Tokyo to the Seto Inland Sea. Momo carries Kazuo's unfinished letter, which contains only the words "Dear Momo". At her mother's estate in Shio Island (汐島), they meet their relatives Sachio and Sae Sadahama, and Koichi, a postman and an old friend of Ikuko, who has always had a crush on her. Momo is devastated and misses Tokyo. In the attic, she opens a present containing a rare picture book about goblins and Yōkai, collected by Sachio's father. Three droplets from the sky enter Ikuko's estate and transform into yokai consisting of Kawa, Mame, and Iwa, the group's leader.
When Ikuko begins taking nursing classes, Momo reads the book and begins to hear some strange sounds from the house.