Recently the Asahi News reported the following:
Letters and postcards, with the autograph of writer Fuutarou Yamada (1922-2001 and the real name is Seiya Yamada) who was known for his Ninpouchou series etc., that were addressed to his friend in the old system junior high school era were found, and they had reached the Fuutarou Yamada Memorial in Hyogo Prefecture Yabushi Sekinomiya. From during the War to becoming a reputed writer in the 1970s, in total 58 pieces of writing were sent to an intimate friend, joking manner writings such as "Because it was ninjutsu, it was fine even to be detarame" were being recorded.
What were found were 21 letters and 37 postcards written to the late Mr. Yasuhiko Yoshida, the classmate in the old system Toyooka junior high school period in Hyogo Prefecture Toyooka City, who later become the professor of Aoyman Gakuin. Mr Yoshida died two years ago, and his family sent them to the Memorial. According to the Memorial, it was said that Yamada and Yoshida, as avid readers, kept writing to each other after graduation.
In 1958 when "Koka ninpojou" was published, a postcard was sent to Mr.Yoshida in Shiga Prefecture Hikone City in July, saying that "Traveled to Koka and Iga". However, in a letter in October, for reasons of the summer heat and being working busily for the new series, it was written that "neglecting formality because after all it is just ninjutsu, so it is perfect to be detarame".
It is good news for fans of Yamada. These items should be useful for those who want to study this famous story writer.