

In Zetsuen No Tempest, there was this sickness that turned everything into
black iron, which is where its name came from. However, from what I can
remember, I am sure there was no explanation in the anime to this question.

**Why are butterflies not affected by the Black Iron Sickness?**

Was this ever revealed in the manga? I am positive that it is not mentioned in
the anime series, or on [Zetsuen No Tempest
Wiki](http://zetsuennotempest.wikia.com), but was there ever an explanation
for this? And if this was in the anime, would you please include a reference
to the episode?

Answers are appreciated. :)


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2014-03-30T09:54:49.860
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zetsuen-no-tempest
Why are butterflies not affected by the Black Iron Sickness?