As he was forbidden from discussing his unit's exact location or mission, Tatsuguchi wrote about the weather, the beauty of the snowy and mountainous landscape around him, and his success in catching fish.
Larangan memberi tahu misi dan lokasi unitnya yang sebenarnya membuat Tatsuguchi hanya bisa menulis tentang cuaca, keindahan pemandangan pegunungan bersalju di sekitarnya, dan keberhasilannya memancing ikan.