"The Twilight Years" is a poignant story revolving around the life of a middle-aged woman who is burdened with the responsibility of taking care of her ageing and ailing father-in-law while trying to balance her work and personal life. The novel explores the themes of old age, family responsibilities, societal expectations, and the struggles of women in a patriarchal society. It offers a critical examination of the social, cultural, and personal issues related to aging and care-giving in post-war Japan.