戦争(せんそう)によって財産を(ざいさんを)失い(うしない)、没落(ぼつらく)したため

'The Setting Sun' (Shayo) is a best-selling novel by Osamu Dazai, portraying the sorrow of declining aristocrats after World War II and the strength of a woman who survives by her own will. The protagonist, Kazuko, and her refined but sickly mother lose their fortune due to the war and are forced to move from their Tokyo mansion to a villa in the mountains of Izu.