This is one of the books my father kept, who was on a requisitioned ship in the southern war zone. The cover has some dirt and tears, but the inside is mostly in good condition. However, there is a key mark written in red pen on page 96. It is believed that a passage related to my father was in that section. "Kenjiro Mioka Diary," published by Hara Shobo, 1973, 1500 yen. If you are interested, please consider purchasing it.