The second random battle theme from Etrian Odyssey, "Destruction Begets Decay" featuring Miku.
Taken from Nicovideo.
Original Title: 初音ミクが世界樹の迷宮・第五階層でhage
-Translation courtesy of regalstar-
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Flowers have appeared! Petaloid used Sleeper!
In no time at all the whole party is asleep
And the boar uses this chance to charge
We can't move! Help!
The party is being haplessly beaten upon
Finally we're awake and begin to counterattack
But before we can finish them, the pollens are spread again
Can't give commands, can't do anything but watch
as first person dies, second person dies...
being attacked, unable to defend themselves
the party died! Game over! NOT AGAIN!
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...
https://www.youtube.com/watch?v=f9iJWKHOOwo