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

恒春: Hengchun, Taiwan / 広春, 香舜, 光春, 光俊, 功俊, 宏春, 恒春, 晃舜: a male given name / 江春, 耕俊, 耕春, 高春: a male given name / 香春: a female given name

瞬間: moment, instant

駿馬: an excellent, fast horse

晩春: late spring

初春: beginning of spring

春分: spring equinox