The title of this book means "Ruri-Colored Doll Made to Float on the River" in English. "Ruri" means "Buddhist holy blue" and the title itself is a reference to the fact that long ago, people sent dolls floating down rivers believing that their misfortunes would disappear along with the dolls. The book was released in 1990 by Shakai Shisosha and its ISBN number is 4-390-11364-X. It's unlikely that any translated versions were ever released.