Daughters of the Cuckoo

(from ebookjapan):
In this masterpiece short story collection by Minori Kimura, which includes two other stories, the title story is about three sisters taken in by different families, 14-year-old Joan, 11-year-old Billy, and 8-year-old Becky are each sent to live with relatives because of their mother's illness. The three sisters grow up in different homes: Joan lives with her aunt, who is single; Billy, who is small and hungry for love at their relative's house; and Becky, who enjoys spending time with her aunt's family in Los Angeles. ......?

In addition to the title story (Mimi, April, June 1978), also includes:
• 40-0 - Mimi, February 1977
• Jewel of the Sea (海の宝石, Umi no Houseki) - Mimi, September 1977
• Uncle Nii's Refined「Bitter Laugh」 (ニィおじちゃんの優雅な「苦笑」, Nii-oji-chan no Yuuga na 「Kushou」) - Mimi, January 1979　
• My Alien (わたしの宇宙人, Watashi no Uchuujin) - Big Comic Original Zoukan, May 1st, 1977 (Note: Excluded from earlier ebookjapan digital editions.)