In the city-state Lisvaletta, while people go about their tranquil everyday lives, crimes and illegal drugs run rampant. Above all, a dangerous, highly-fatal drug named "Anthem" is casting a dark shadow on the streets. The "Seven-O" special criminal investigation unit whose speciality is to supervise the investigation of Anthem, institutes a "Double Decker System" policy of forming groups of two investigators, and all members are given nicknames. One team consists of the veteran investigator Doug Billingham accompanied by the rookie Kirill Vrubel. This unconventional duo combines an aloof veteran detective who is hard to get a read on, and an inexperienced detective who is a little too eager.
Characters
Seven-O
A special department of Lisvaletta's narcotics division focused on dealing with Anthem trafficking, serving directly under the military. ; / "Veteran" ; / "Perm" / "Okappa" / "Buzz-Cut" ; Deana del Rio / "Pink" ; Katherine "Kay" Roshfall / "Rookie" ; Maxine "Max" Silverstone / "Boxer" ; Yuri Fujishiro / "Robot" ; Travis Murphy / "Boss" ; Sophie Gainsbourg ; Apple Bieber / "Doctor"
Esperanza
A powerful Anthem-related criminal organization and the main antagonists of the series. ; Zabel Franken / "Z." ; Bamboo Man / "B." ; Agapetus Kroyd / "A."
Other Characters
; Derick Ross ; Valery Vrubel ; Brian Cooper ;Anthem Users ;Nikai
Media
Anime
The 13-episode anime series was announced on January 4, 2018, titled Double Decker! Doug & Kirill, and premiered from September 30 to December 23, 2018 on Tokyo MX and other channels. The series is directed by Joji Furuta and produced by Ryo Ando, with animation by studio Sunrise and forms part of the Tiger & Bunny project. Tomohiro Suzuki returned to produce the series' scripts. Masakazu Katsura returned to handle character designs. Norihiro Itagaki returned to handle animation character design. Yuki Hayashi composes the music. The opening theme is "Stereo to Monologue" by KiRiSaMe, and the ending theme is "Buntline Special" by Vickeblanka. The series was simulcasted on Crunchyroll, with Funimation producing an English dub as it aired. A three-episode anime titled Extra Story was released on February 10, March 10 and April 10, 2019.
Episodes
Extra Story
Three "Extra" episodes were released in 2019. The first was set between Episodes 4 and 5, the second was set between Episodes 8 and 9, and the third was set after Episode 13.
