The official website for Takahisa Zeze's Namida tsubo is now online, although at present it's just a home page. Art Port Inc. (K.K. Âto Pôto) is scheduled to release the movie theatrically in Japan on March 1st.

Namida tsubo is based on the eponymous novella by Jun'ichi Watanabe. The movie stars (listed order corresponds to order on official website) Kanako Kojima, Issei Ishida, and Aiko Satô.

Here's a description of Namida tsubo from Tokyograph: "The original work tells the story of a magazine editor who loses his wife to cancer, and he keeps her ashes in a jar. When he begins dating another woman, he becomes overwhelmed with guilt. For the movie version, the two women are sisters - Aiko Sato plays the younger sister who passes away, while Kanako Kojima plays the elder Tomoyo, co-starring with Issei Ishida."

Namida tsubo official website