(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

oral history

historicism

Shenzhen (a major sub-provincial city in Guangdong, in southeastern China)

a female given name

beneficent / merciful

careful, thoughtful, judicious

(poetic) late autumn; deepest autumn

(colloquial) Clipping of 意味深長 (imishinchō).

Alternative form of 更かす