Wikipedia
Isagiyosa
In Japanese society, particularly in historical feudal Japan, isagiyosa (, "purity") is a virtue, translated with "resolute composure" or " manliness". Isagiyosa is the capability of accepting defeat with composure and equanimity. It stands besides other central virtues such as public-spiritedness (kō no seishin), loyalty (seijitsusa), diligence (kinbensa) and steadiness (jimichisa).
Cherry blossoms, because of their ephemeral nature, are a symbol of isagiyosa in the sense of embracing the transience of the world. Honda (2001) maintains that these virtues are not Japanese in particular but form a moral code common to all Asian agricultural societies.