Yamazakura: a type of wild Japanese cherry tree (the word can also be used to describe the tree's blossoms).

During WWII, the first Japanese Kamikaze unit was given the title
of Yamazakura, to honour the last two official Samurai warriors
who were part of the unit.
The Samurai Bushido code dictates death before the shame of surrender.

Falling cherry blossoms were believed to bring good luck to the courtships
of the teenagers who were left behind (in hope of many male babies),
because the Emperor had conscripted all available men into the doomed war.