One winter day, according to a famous story, the warlord Oda Nobunaga went outside and found that his sandals were missing. He asked Saru, Monkey, as he called his young servant, where they were. The servant took them out of his robe and said that he had warmed them. The servant later became Toyotomi Hideyoshi, the ruler of Japan.
The story first appears in Ehon Taikōki, a popular illustrated biography. The magazine Waraku notes that no other source has it, so it cannot be called true.