The July issue of Shogakukan 's Monthly Flowers magazine revealed on Monday that Akimi Yoshida 's Umimachi Diary (Seaside Town Diary) manga will end in the magazine's next issue on June 28. The last chapter will have a color opening page and will have 50 pages.

The manga's story takes place in Kamakura, and revolves around three sisters: Sachi, the eldest sister who works as a nurse; Yoshino, the middle sister who works in a bank; and Chika, the youngest sister who works at a sporting goods store. The three sisters have been living together in their family's house after their parents divorced and left. One day, they receive news that their father has passed away. Yoshino hasn't seen her father in over 15 years, and is not particularly affected by the news, while Chika barely has any memory of him. Despite this, Sachi persuades the sisters to go to his funeral. There, they discover that they have a 13-year-old half-sister named Suzu whom they have never met. With no one left to care for her, the sisters invite her to live with them.

The manga began serialization in Monthly Flowers in 2006, and Shogakukan shipped the eighth compiled volume (seen right) in April 2017.

The manga was a nominee for the 11th Cultural Affairs Media, Art, & Manga Award, and it won the 2013 Manga Taisho (Cartoon Grand Prize) award.

The manga inspired a stage play, which ran from March through April 2017 in Tokyo.

The manga also inspired a 2015 live-action film by famed director Hirokazu Kore-eda that screened with English subtitles under the title Our Little Sister . The film won five awards, including Best Picture of the Year, at the 37th Annual Japan Academy Prizes in March 2016. Sony Pictures Classics released the film digitally and on home video in North America.