His novels mainly reflected the political, social, and cultural environment of Japan during the Meiji Restoration. During this period, Japan experienced a transformation from a traditional feudal society to a modern country. The social structure, values, and cultural habits had undergone tremendous changes. At the same time, with the development of the industrial revolution, Japan gradually became one of the focal points of the world, and its economic and military strength continued to increase. The characters and plots in Kazuki Haya's novels reflected the changes and influences of these times. For example, his novel " Pet Girl of Sakura Village " depicted the life of a rich girl in school, reflecting the widening social class and wealth gap at that time. At the same time, the protagonist in the novel also experienced some problems related to the social culture of that time, such as the unequal status of men and women, the complicated interpersonal relationships, and so on. These problems still exist in Japan today. Kazuki Yayama's novels reflect the characteristics and characteristics of that era by describing the social and cultural background of that era. At the same time, they also provide us with a window to understand and feel the society and people's lives during that period.