It is said to be auspicious that one dreams Mt. Fuji, a hawk or an eggplant in the first night of the year, but according to a theory, it is also said that these three items were a list of what Ieyasu liked.
初夢で見ると縁起がいいものと言われる富士山・鷹・ナスは、一説には家康の好きなものを列挙したと言われる。