In the hinterlands of Germany, the servants of the Phantomhive house are at a loss when their master, Earl Ciel Phantomhive, is both physically and mentally debilitated by the curse of the Wolfman that roams the Werewolves' Forest. In the face of his master's pitiful new demeanour, consummate butler Sebastian, disillusioned, viciously takes Ciel to task, citing a breach of contract. As the Phantomhive household's crisis unfolds, the sulphurous miasma of the Werewolves' Forest encroaches ever more upon the village ruled by the Emerald Witch...

Volume 20 of the Black Butler manga series by Yana Toboso.