one

(literally) know the other side and yourself, a hundred battles will not be perilous

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

one day, 24 hours / the daytime, the period from dawn until dusk / (figuratively) a short period of time / one day, someday, an unspecified day / the first day of the month

(literally) one side / everywhere, all around, the whole area / one viewpoint, one opinion or way of thinking / the front page of a newspaper

for the time being, for the present

the basics, a general idea

a combat sport match where opponents compete against each other using different styles of martial arts

(military) siege (military blockade of settlement)

You should treasure every encounter, for it will never recur.