闘志: a male or female given name

東下: to go east / 投下: to invest / 透過: to penetrate / 糖化: to saccharify / 登科: to pass the civil service test

投下: investment / 透過: penetration / 灯火: lamp / 等価: equivalence / 糖化: saccharification / 灯下: by lamp / 踏歌: an ancient dance / 藤花: wisteria flower / 頭花: flower head / 東下: going east / 刀下: under the sword

等価: equivalent

怒涛: surging waves

東亜: East Asia / 東: a surname

刀: a sword, a katana; a scalpel, such as that used by a surgeon; a kind of bronze or copper money in ancient China, shaped a bit like a sword / 灯: electric light / 当: / 投: / 豆: / 党: political party

疾う: quickly, swiftly

灯: electric lights / 投: pitches / 棟: buildings / 等: / 頭: heads of large animals (cows, horses)

当: this (business or place)