In His Butler, Encouraging, a mysterious figure begins investigating the presence and history of witches and werewolves, adding a layer of suspense to the narrative. Meanwhile, Sieglinde Sullivan successfully completes her Ultimate Magic but collapses from sheer exhaustion. Upon waking, she expresses a desire to go outside, though Wolfram reminds her that she remains under strict confinement. Despite this, Ciel visits her and offers her a glimpse of freedom by inviting her out.
In the village’s basement, Sieglinde explains her understanding of miasma—a substance believed to empower werewolves. However, Sebastian shatters her beliefs by revealing the harrowing truth: what she thought was miasma is actually a potent and deadly poison. This shocking revelation forces Sieglinde to confront the reality that her entire upbringing, knowledge base, and belief system were built on deceit and manipulation. Her life’s work, meant to be protective and magical, has instead created the most dangerous toxin imaginable.
Black Butler Season 5 Episode 8, titled His Butler, Furious, is expected to adapt Chapter 98 of the manga. The episode will delve deeper into Sieglinde’s origins, exploring how her supposed magical talents were weaponized and the purpose behind disguising poison as miasma. As her worldview crumbles, the emotional impact on her character and her shifting relationship with Ciel and Sebastian will likely become central themes. This pivotal episode could also begin to uncover the identities and motivations of those behind the manipulation, setting the stage for a larger confrontation.
The episode is scheduled to air in Japan on Saturday, May 24, 2025, at 11:30 pm JST across Tokyo MX, BS11, Gunma TV, Tochigi TV, AT-X, and MBS. It will also be available for streaming on Japanese platforms like DMM TV, d-anime Store, and U-NEXT. Internationally, fans can watch Black Butler Season 5 Episode 8 on Crunchyroll and Muse Asia’s official YouTube channel, with regional availability varying by country.