等質:

忍者刀: ninja sword, ninjatō.

当用: current use / 登用: one's position, one's job assignment / 盗用: unauthorized use, plagiarism / 東洋: the Orient, the East

盗用: to use without permission, to plagiarize / 登用: to post (someone) to an office or station

(Hachijō) father

燐酸肥料: phosphate fertiliser

明け方: daybreak

髪型, 髪形: hair style / 上方: Kyoto and Osaka area in the Edo era / 紙型: stencil

rival in love

山形: Yamagata, Yamagata / 山県: Yamagata, Gifu