Board Thread:Roleplay/@comment-36289716-20190302163242/@comment-27661770-20190305184747

(Literal and figurative sense. A heart doesn't have a heart, are ya nuts?

And in any case, they lock away a heart. It's the manifestation of the darkness in a heart if I recall.

Which makes more sense, and explains why we don't see any light-oriented equivaklents.)