Black Butler Season -

One thing remains constant across all seasons: Sebastian’s unwavering vow, "I am one hell of a butler."

This season is infamous among fans. Rather than rebooting or following the manga, Season 2 acts as a direct sequel to Season 1’s original ending. It introduces new characters: Alois Trancy, a volatile young earl, and his butler, Claude Faustus. The plot involves a convoluted love triangle for Ciel’s soul. While visually stunning and delightfully unhinged, Season 2 is entirely anime-original and has no connection to Yana Toboso’s canon story. For manga purists, it is considered a non-canonical "what if." The "Reboot": Book of Circus (2014) After a four-year hiatus, the production team made a brilliant decision: they ignored Seasons 1 and 2. black butler season

This is where the divergence occurs. Because the anime caught up to the monthly manga, the writers created an original ending. The second half introduces an anime-only villain (Ash) and concludes with a dramatic, apocalyptic finale that resolves the Faustian contract in a way the manga never did. One thing remains constant across all seasons: Sebastian’s