Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving” gives us a look at Sebastian being someone else’s butler for a change. Specifically: Sieglinde Sullivan. Regardless of who he’s serving though (and what he’s actually doing in the meantime), Sebastian looks like he’ll never stop being one hell of a butler.

Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving”: Details

Black Butler -Emerald Witch Arc- JP key art
Sebastian’s smirk doesn’t go away either.

Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving” is the fourth episode (you can read my reviews of Ep. 1, Ep. 2, and Ep. 3 here) of the new season of the dark comedy and darker fantasy/supernatural anime adaptation of Black Butler. This latest season comes directly after the Public School Arc.

Said anime is the anime adaptation of the manga of the same name by Yana Toboso (Rust Blaster, Disney Twisted-Wonderland). CloverWorks (Spy x Family, Bocchi the Rock!, The Elusive Samurai) is the animation studio behind the anime. Crunchyroll is the company licensing the anime for its global release.

Production Crew

Alas, we don’t know who specifically is behind Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving”.

As for Black Butler -Emerald Witch Arc- as a whole though: we do know that Kenjirou Okada is the director, with Hiroyuki Yoshino as the writer. Yoshito Ito is the producer. Yumi Shimazu is the character designer. Ryo Kawasaki is the composer behind music.

Speaking of music: the opening theme song for Black Butler -Emerald Witch Arc- is “MAISIE” by Cö shu Nie feat. HYDE. Meanwhile, “WALTZ” by RYUGUJO is the ending theme song for the same.

Voice Cast

Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving” features the voices of Maaya Sakamoto (Brina Palencia in English dub) as Ciel Phantomhive, Daisuke Ono (J. Michael Tatum in English dub) as Sebastian, Rie Kugimiya (English dub voice unknown) as Sieglinde Sullivan, and Chikahiro Kobayashi (English dub voice unknown) as Wolfram Geltzer.

The Phantomhive manor voice cast consists of Hiroki Tōchi (Ian Sinclair in English dub) as Baldroy, Yūki Kaji (Jason Liebrecht in English dub) as Finnian, Emiri Katō (Monica Rial in English dub) as Mey-Rin, Takuma Terashima (Spike Spencer in English dub) as Snake, and Shunji Fujimura (R. Bruce Elliott in English dub) as Tanaka.

When and Where to Watch

Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving” made its airing and streaming (aka. simulcast) debut on April 26, 2025. You can watch this episode only on Crunchyroll. In fact, you can watch this entire latest season of the anime, along with all previous seasons and even the Book of the Atlantic anime film, only on Crunchyroll.

Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving”: Synopsis

As imperious as she looks here towards Sebastian, but also softened by childish antics.

Alas, Black Butler -Emerald Witch Arc- has only recently begun its airing. In fact, Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving” has only just made its debut two days ago as of this writing. Thus, here’s the official synopsis from Crunchyroll to give you an idea of what’s going on without too much in the way of spoilers below:

“Sebastian starts serving Sullivan as her butler. Meanwhile, Ciel seems to have become a different person.”

Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving”: The Good

Black Butler -Emerald Witch Arc- Ep. 4 "His Butler, Serving" screenshot 1
Perfectly describes the tone of much of this episode.

The story of Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving” continues to captivate me, as does the rest of this anime. Mostly because of how complex the story of this episode is. Ostensibly, this episode is mostly a light-hearted story of Sebastian serving a young lady instead of a young master this time around. However, it’s so much more than that. We get a look into Ciel’s backstory, which fans of the manga already know what it’s foreshadowing.

We even get a look at Finny’s backstory, and it only raises even more questions about who (or what) Ciel’s gardener actually is. Alas, manga knowledge is useless here, as Yana Toboso has not yet revealed his full backstory yet. Still, the tidbits we do get are fascinating, and that tidbit is part of why this episode’s story is amazing.

Of course, enhancing that story is the incredible animation work from CloverWorks. Their animation team continues to put feature length anime film levels of animaton quality into this episode. Seriously, when you’re busy admiring the life-accurate reflections on a metal spoon, you know you’re getting good animation here. Even the food looks amazing despite it being from a distance. Heck, it’s better than some animes’ closeups of food.

Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving”: The Bad

Black Butler -Emerald Witch Arc- Ep. 4 "His Butler, Serving" screenshot 2
The other times is metaphorical and literal milk on Ciel’s face.

Alas, if you’re looking for bloody action, Black Butler -Emerald Witch Arc- Ep. 4 “His Butler, Serving” isn’t for you. This entire episode is more of a mystery and intrigue story. Albeit, there is a moment of bloody action in Finny’s backstory. However, we don’t get to see the action itself, and it’s definitely played more for horror than anything else. If you want bloody and/or intense action, then might I suggest watching Demon Slayer: Kimetsu no Yaiba, Kaiju No. 8, DDDD, DAN DA DAN, Sword Art Online Alternative: Gun Gale Online II, Zenshu, Blue Box, and/or Solo Leveling? Those anime should have more than enough action to satisfy your inner action junkie, at least until Black Butler gets to one of its more action-packed moments.

What did you all think of this week’s episode of Black Butler -Emerald Witch Arc-? Tell us your thoughts about this episode in the comments section below.