@Svantovit @RodrickSage This shit again?
With like 2 seconds of research you get a reddit post from an history sub. Turns out that it's from a retarded academic that wrote this partly for "muh art"
IIRC the only thing we have to go on is inter folk tales from the time as a story of "what happens to the other slaves who just suddenly disappear?", as for actually cannibalism, there's 0 proof but the author insists on it