Is Diary of a Mad Old Man based on a book?

Common questions

Is Diary of a Mad Old Man based on a book?

Yes. Diary of a Mad Old Man is based on the book Diary of a Mad Old Man by Jun'ichirō Tanizaki (1961).

Who wrote the book Diary of a Mad Old Man is based on?

Diary of a Mad Old Man was written by Jun'ichirō Tanizaki and first published in 1961.

Should I read the book before watching?

If you like knowing the full story and characters first, read Diary of a Mad Old Man before you watch. Adaptations often change or cut plotlines, so the book is a different experience even if you've seen the movie.