Diary of Our Days at the Breakwater

is a Japanese manga series about recreational fishing by Yasuyuki Kosaka. It has been serialized in Akita Shoten's seinen manga magazine Young Champion Retsu since February 2017 and collected in eleven tankōbon volumes as of September 2023. An anime television series adaptation by Doga Kobo aired from April 7 to September 22, 2020. A live-action web drama adaptation premiered in June 2023. Characters Hina is the main protagonist who moves with her family from Tokyo back to her home town of Ashikita, Kumamoto, Kyushu. She ends up joining the Breakwater Club at her new school. Hina's childhood friend, whom Hina had nearly forgotten, she is a first-year like Hina and also a new member of the Breakwater Club. She is passionate about fishing, and has been fishing since elementary school.