While Earl Ciel Phantomhive and his butler, Sebastian, are away from home chasing Blavat, someone breaks into his London townhouse, attacks Prince Soma, kills his butler, Agni, and leaves a threatening message carved into the wall. Then, while Prince Soma recuperates, someone from the earl's past arrives and shocks everyone with his identity.

Printed Manga-style; book opens from left to right. Pages are read from right to left. Originally published: Japan : Square Enix Co., 2017. Translation of: Kuroshitsuiji.