H3008 – Haiku by Issa – A world of grief and pain …
by Master Japanese Calligrapher Eri Takase
A world of grief and pain:
Even then … 
ku no shaba ya|
sakura ga sakeba
This haiku by Issa was written upon the death of his child. With this in mind, there are two common ways to interpret this poem. One is pessimistic saying “how can flowers have the audacity to bloom in such a cruel world”. The other optimistic “even in such a cruel world, flowers bloom”.
Sam Hamill suggests the translation:
A world of trials,
and if the cherry blossoms,
it simply blossoms” 
David G. Lanoue suggests the translation:
world of pain–
and the cherry blossoms
add to it! 
R. H. Blyth concurs saying that beauty had the audacity to be in the same world made Issa’s pain all the greater.
Robin G. Gill notes that the “world” refers to shaba “the place where the masses who can’t free themselves from desire continue to live while enduring suffering.”
Mr. Gill suggests the translations:
A world of pain
whether the cherries should
blossom or not!
World of woe,
whether the cherry buds
open or not
This world of pain
the cherries have bloomed
they bloom and yet … 
A second interpretation is more optimistic. Rev. Mas Kodani writes that “Shaba refers to the world of Samsara, the world of self-centered, self-creating delusion, the unawakened state …” and Issa is encouraging us by saying that even in such a world, good things still happen.
 Gill, Robin D. (2007). Cherry Blossom Epiphany - The Poetry and Philosophy of a Flowering Tree. Paraverse Press. Florida. 440.