Thread:SonikkuAensland/@comment-26381576-20170518105337/@comment-5688420-20170521130040

The Japanese cover for the first Crisis Moon shows Twilight holding a black butterfly on her fingertip. And her intro animations also feature her letting the butterfly go, but not before whispering "Forgive me...". Also, in the final episode of the anime, a single black butterfly lands to where Twilight was lying, right after Kiyo and Yuuno leave the vampire mansion.

The butterfly in Crisis Moon represents the souls of the innocent victims that Twilight was forced to kill in order to satiate her bloodlust against her own will.