Haiku
Technically speaking, haiku are not just five-seven-five-syllable poems, but are actually supposed to follow certain conventions, such as mentioning certain seasonal words. These are thus not (all) proper haiku.
I wait at the grave
despite being the only
the flowers have comehitori demo
haka de matteru
hana ga kitaひとりでも
はかでまってる
はながきた一人でも
墓で待ってる
花が来た
To challenge a form
it is sometimes necess’ry
to work within it.
From JoMoWriPoShoSto.