
1) Ethics book 2) Warrior code
Found on
https://www.crosswordclues.com/clue/hagakure

Hagakure (Kyūjitai: 葉隱; Shinjitai: 葉隠; meaning Hidden by the Leaves or hidden leaves), or 葉隠聞書 is a practical and spiritual guide for a warrior, drawn from a collection of commentaries by the samurai Yamamoto Tsunetomo, former retainer to Nabeshima Mitsushige, the third ruler of what is now Saga prefecture in Japan. Tsuramoto Tash...
Found on
http://en.wikipedia.org/wiki/Hagakure

Early 18th Century text complied by Tashiro Tsuramoto from the recollections and precepts of Yamamoto Tsunetomo. Considered one of the foremost works of samurai thought.
Found on
http://www.samurai-archives.com/vocab.html
No exact match found.