(勝って)兜の緒を締めよ
2020.04.10 13:27
[Katte-kabuto-no-o-wo-shimeyo]
Literal translation:
Tighten the strap of your warrior helmet (after victory).
Meaning:
Steel yourself further (after victory).
Prepare yourself for coping with something unpleasant (even after success).
Don't let your guard down.