The title of this book is the Japanese name for Irene Webster-Smith, a woman of Irish birth who joined the ""Japanese Evangelical Band"" in 1916 and has served in Japan for most of the years since. Her particular mission was that of establishing and running homes for young girls sold into prostitution by their families, and for older prostitutes. The book is one of the ""Harper Jungle Missionary Classics""--though in this case the ""jungle"" would seem to be figurative. As with other volumes in the series, the story of the subject's life is told in fictional form, much of the dialogue and action apparently reconstructed. Sensei lives by implicit faith--digging a well where she believes God told her to have it dug, and carrying on her work by other such acts of faith. Good people come to her aid and there is much smiling. The titling of this, and its companion volumes, as ""missionary classics"" would seem to be a similar act of faith on the part of the publishers.