Sonic rainbooms are not fully understood by pony kind. Little research has been done upon this rare phenomenon or the effects that they can have on the user. Researchers theorize that under different climatic conditions the effects can differ drastically. Currently only one pony has the ability to fully perform such a feat but where will it lead her?
Only you can find out.
Not really very dark but it is probably worth the tag
Will be updated sometime in the future. Notes are all written, just need the actual text.