"Historical kana usage", a prescriptive method of using kana to write Japanese. Devised in the Edo period by Keichū (契沖) and taught in schools until 1946, it aims to be etymologically faithful and reflects earlier stages of the language (Heian period and earlier).

cheek, cheekbone / assist

a male given name

a target, a mark, a bullseye / an objective, an object (of doing something)

as far as ... is concerned; in terms of ...

Kyoto (a prefecture in the 近畿 (Kinki) region of Japan facing the Seto Inland Sea)

historian

the ancients, ancient people

study of history

(Internet slang, especially anime and manga fandom) events or things from the past which one wants to whitewash/erase from history (due to it being embarrassing, poorly received, etc.); dark past