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

everything

(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

enemy bullet

enemy aircraft