DARKER THAN BLACK: Kuro no Keiyakusha - Sakura no Hana no Mankai no Shita

DARKER THAN BLACK -黒の契約者- 桜の花の満開の下

A side-story of Darker than Black, also called Episode 26, that takes place during the events of Kuro no Keiyakusha.

The Syndicate has another job for Hei and his team. This assignment involves the sought after possessions of a dead contractor, which are believed to have been buried beneath a cherry tree. Meanwhile, Misaki Kirihara and her team plan a trip to the Cherry Blossom festival.

(Source: MAL Rewrite)