
Her Love Boils Bathwater

 is a 2016 Japanese drama film directed by Ryōta Nakano. It was selected as the Japanese entry for the Best Foreign Language Film at the 90th Academy Awards, but it was not nominated.
Plot.
A woman named Futaba, single-handedly raising her teenage daughter Azumi, learns that she is diagnosed with advanced cancer. She decides to use the last few months of her life to improve the life of her family. To do this, she returns to the house of her husband, who went to another and was in turn abandoned with a little daughter in her arms. Together they reopen the family bath, which will provide them with a comfortable life. Another challenge facing Futaba is to help her daughter fend for herself at school and introduce her to her biological mother.