The idea of sleep as a battlefield is not one that appeared in any of the other poems that I looked at, so I found this one very interesting in its uniqueness. It's not quite a dream, but not quite a metaphor either. I also really enjoyed the format of the poem, and the lack of punctuation, which is common in Korean poetry since punctuation has less meaning in the language.
sleep’s soldiers
clasping small spears and shields
advance and retire
(beneath my eyelids
the field of sleep densely spreads)
strike/struck strike/struck strike/struck
dissipating like dust
what’s going on?
where did you come from?
no clue
let’s become cloud holding hands
let’s disappear as one
like that like that like that
sleep’s flock of cloud
suddenly hrmph!
snorting
as the body jerks
the field of sleep breaks
the soldiers disappear
that spider’s thread of sleep is torn
towards the field of sleep again
nearing slipping
I call through
spider’s thread spider’s thread spider’s thread
to sleep’s soldiers
who will one day seize me for eternity