日本刀にみる 花鳥風月 (Kachō Fūgetsu as Seen in Japanese Swords) is a beautifully illustrated volume published by the Nezu Museum that explores the aesthetic theme of kachō fūgetsu—“flowers, birds, wind, and moon”—as expressed in Japanese swords and their mountings. The book highlights how elements of nature were incorporated into the decorative arts of the samurai, particularly in sword fittings, lacquered scabbards, and metalwork. Through detailed photographs and scholarly commentary, the volume reveals how craftsmen used motifs such as blossoms, autumn leaves, birds, and seasonal landscapes to convey poetic sensibilities and the deep cultural appreciation of nature that characterizes traditional Japanese art. This work provides collectors and enthusiasts with insight into the artistic and symbolic beauty found in the mountings and ornamentation of the Japanese sword.