As BBBFF and LSBFF, Twilight and Shining Armor share a sibling bond that defies convention, though their ideas for Nightmare Night costumes force the pair to realize just how deep their mutual adoration goes.

Their admiration isn't the only thing that goes deep that night.

Written for the Cloptober Wincest Contest!

Contains: Foalcon, Rimming, Deep Anal, Abdominal Bulges, Light Anal Gape and Inter-Sibling Mushiness.