The manga's story centers on the people who live in a hot spring town in a valley. In particular, it focuses on Kazuki—the stepbrother of Suzu, one of the central characters of Yoshida's previous Umimachi Diary manga.
 
(Source: Anime News Network)

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.
 
(Source: Anime News Network)
 
Notes: 
- Chapter count includes two extras and the side story "Tooriame no Ato ni". 
- Won an Excellence Award for manga at the 2007 Japan Media Arts Festival. Won the 2013 Manga Taishou award. Won the 2015 Shogakukan Manga Award in the general manga category. 
- Adapted into a live action film directed by Hirokazu Kore-eda which competed at the Cannes Film Festival in 2015.

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