If you are looking for Episode 11 of the (titled "Paint it Black"), it focuses on the origins of the characters Black and White and their connection to the "King of Despair". Both seasons are available on the platforms listed above. [Spoilers] Kekkai Sensen & Beyond - Episode 11 discussion

This episode serves as the first half of the two-part Season 2 finale. : Originally aired on December 16, 2017.

: Available for purchase as a digital download.