Black Butler manga volume 4 features story and art by Yana Toboso.

London - the capital of the Great Empire - is once again under siege, as a string of bizarre attacks on British citizens returned from India sends rumours flying and casts a pall upon Queen Victoria's rule. Sent in by Her Majesty, young Earl Phantomhive and his most capable butler, Sebastian, follow a trail that collides head-on with an Indian youth who claims to be a prince. But this prince possesses an extraordinary butler of his own! As an intense rivalry between the two butlers begins to form, will the kitchen be the dueling duo's final battleground?!