The Fight Over Being Pure Hearted, Is Not So Light Hearted

Unicorn horns can't do much, but, what about unicorn blood? Mix unicorn blood, human blood, and then heat it to seventy degrees, things get interesting to say the least. Let's just say, the results are about as pretty as a unicorn heart is pure. And the Pines and company, is gonna find out just how west of weird they really are.

I own none of gravity falls or these characters.