[Machine Translation] This is a reprint of the rare book that clarified the whole picture of the master swordsmith Suishinko Masahide. The book contains detailed descriptions of 100 master swordsmiths of the new swordsmith period, including the master swordsmith Suishinko Masahide, who pioneered the new world of the "new sword period" in sword history with his restored forging method, as well as his family members Naotane, Masayoshi, and Kazuhide. This groundbreaking work, which includes all of Masahide's life and writings, has been brought back to life for the first time in almost 40 years.