This chapter introduces the scope and purpose of the book. It begins with a survey of the Western theories on the everyday, concentrating on Henri Lefebvre, Michel de Certeau and Walter Benjamin, and suggests central concepts for analysing Ozu’s films such as ‘deviation’ and ‘permeation’. The concept of the everyday is then expanded into the Japanese context by examining the possibility of applying Western ideas to modern Japanese history. Lastly, reviewing the previous Ozu studies in academia, from Richie and Bordwell to Wada-Marciano and Phillips, this chapter introduces and examines the socio-historical approach as the primary methodology of this book.