historian

(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

study of history

historic, historical / already-happened, past / former, old, traditional

(Internet slang) Tokutei Asia (East Asian countries which have obvious negative views of Japan)

Synonym of アナトリア (Anatoria, “Anatolia”); Asia Minor

東アジア: East Asia

Asian Continent

東南アジア: Southeast Asia

cultural festival (a regularly-held Japanese school event meant to display the activities of the students)