ACCA 13-ku Kansatsu-ka Regards (ACCA: 13-Territory Inspection Dept. Regards)
※ Contains spoilers for the TV anime
The special's story is set in the capital city of Badon one year after the events of the television anime, and shows Jean and the rest of the ACCA department preparing for the one-year anniversary of the establishment of the new order. For the characters — caught between rumors of unrest, unchanging days, new crossroads, gazes remembered in memories, and days of new beginnings — time once again begins to move forward.
With the Five Chiefs of ACCA deposed, and Mauve heading the new ACCA system, ACCA section chief Owl reunites with Pine, one of the former Five Chiefs, at a cafe in Badon in the midst of the city's boisterous preparations for the anniversary. Pine's unknown past is made clear. Meanwhile, Jean is bothered a particular matter, and he has a reunion with a particular man at Birra. The meetings will offer a glimpse into the characters' pasts.
[Source: Anime News Network]