A love story about two step-siblings, Yota and Kaoru. Long ago, Yota's mother married Kaoru's jazz-playing father, effectively merging the two families. Unfortunately, Kaoru's father skipped town, and Yota's mother passed away, but not before imparting a dying wish to her young son to take care of Kaoru.

The story is about a family of three sisters and one brother with a dog living and running a Japanese Ryokan in Tenjin-cho, Hiroshima near Hiroshima Prefectural Industrial Promotion Hall.