History Anime / CaseFileNoTwoTwoOneKabukicho

The show is animated by Creator/ProductionIG and airs currently on MBS, TBS and BS-TBS in Japan when the first episode aired on October 11, 2019 under the Animeism program block. The anime will also have a manga and novel adaptation.

* CerebusRollercoaster: The series is a LighterAndSofter version of Sherlock Holmes where there's a lot of comedy involving the characters. It only gets serious when the actual Jack the Ripper is involved.

* FunbagAirbag: Irene and Sherlock hide in Milverton's sauna bed when the latter enters his room. Unfortunately, Irene is on top of Sherlock, who is very distracted with her boobs on his face causing to recite. Irene has to shut him up by smothering her boobs, causing him to pass out.

* OncePerEpisode: Sherlock providing TheSummation of the crime with a ''rakugo'' performance.

* RealityEnsues: In "Wife Looks Into the Future", the Morstan siblings are both detained by Adler's bodyguard while trying to go inside her house to look for the USB drive. They were never seen again for the rest of the episode as they're locked up in jail.

* RealityEnsues: The Morstan siblings are both detained by Adler's bodyguard while trying to go inside her house to look for the USB drive. They were never seen again for the rest of "Wife Looks Into the Future" as they're locked up in jail.

* RealityEnsure: Lucy and Mary Morstan are both arrested while trying to go inside Irene Adler's house to look for the USB drive. They were never seen again for the rest of the episode as they're locked up in jail.

* MythologyGag:
** The episode "Hello Detectives" has a number of references to the Sherlock Holmes franchise.
*** Shinjuku ward is divided to the west and east side in the middle due to metro line traveling in the center of the ward, similar to the actual west and east side of London. The map shown at the end of the episode shows that the metro line is the Yamanote Line.
*** The address of the Pipe Cat bar is ''located'' at 221st Avenue, a reference to Sherlock's home address in London, which is 221B Baker Street.
*** The kid who runs into Watson in the parking lot and bumps into him is a reference to the Baker Street Irregulars. The group is named officially as of "Why Not Join the Staring-At-Eye-Moles Squad?".
*** Mrs. Hudson allowed Watson to stay at an apartment inside the building that houses Pipe Cat. In the anime, ''she'' is charge of the bar's operation and the landlord, a reference to Sherlock's ''actual'' landlady at Baker Street.
*** The entire episode itself is a Japanese-based retelling of the novel ''A Study in Scarlet''.
** The episode "Why Not Join the Staring-At-Eye-Moles Squad?" is an adaptation of ''The Red-Headed League''.
*** A pair of boxing gloves is seen hanging in Sherlock's apartment. It's shown in ''The Adventure of The Gloria Scott'', ''The Adventure of the Solitary Cyclist'' and ''The Adventure of the Naval Treaty'' that he's good in boxing. The [[Film/SherlockHolmes 2009 movie]] also shows off Sherlock's boxing skills.
*** One of the shops next to the Poppin flower shop is ''Garrideb''. Garrideb is one of Sherlock's clients in the story ''The Three Garridebs''.
*** Watson gets embarrassed whenever he's near Mary. In the general franchise, Mary is usually paired up with him as either a love interest or later on as his wife.
*** In the epilogue, James mentions a previous case about a "snake that came down from the ceiling", obviously referencing ''The Adventure of the Speckled Band''.
** The episode "The Dream of Fuyuto Kyokgoku, the Ace" adapts ''The Adventure of the Norwood Builder''.
*** When the detectives discuss the state of Shinjuku, they reveal the local mayor's name is Moran, aka, Sebastian Moran from ''The Adventure of the Empty House''.
** The episode "Wife Looks at Future" is a loose adaptation of ''A Scandal in Bohemia'' due to the appearances of Irene Adler (the woman who beat Holmes) and her lover Godfrey Norton and the case regarding Irene stealing a piece of information from a very important member of society which can be used as blackmail.
*** The episode is also inspired by the [[Recap/SherlockS02E01AScandalInBelgravia BBC version]] of ''A Scandal in Bohemia'' where Mycroft enlists Sherlock to retrieve a gadget (in this case, a USB drive instead of a phone) containing classified information from Irene. Initially, it's hinted to be revenge porn but it's actually something else.
*** Mycroft Holmes works under the Shinjuku city government, a reference to his ''ambiguous'' job in London when he first debuted in the Doyle novels.

*** The episode is also inspired by the BBC version of ''A Scandal in Bohemia'' where Mycroft enlists Sherlock to retrieve a gadget (in this case, a USB drive instead of a phone) containing classified information from Irene. Initially, it's hinted to be revenge porn but it's actually something else.

* RealityEnsures: Lucy and Mary Morstan are both arrested while trying to go inside Irene Adler's house to look for the USB drive. They were never seen again for the rest of the episode as they're locked up in jail.

* GettingCrapPastTheRadar: "Wife Looks Into the Future" is full of it, considering it involves a series of AI-life-sized, life-like dolls. Though its never outright said its, ahem, [[{{Sexbot}} "extra"]] duties in terms of companionship are pretty clear. When Toratarō appears in a queue for the latest model, Sherlock [[ADateWithRosiePalms wordlessly hands him an entire stack of tissue boxes he had bought for himself earlier.]] Toratarō ''thanks him''.

* OncePerEpisode: Sherlock providing TheSummation of the crime with a ''rakugo'' perfomance.

** Episode seven is a loose adaptation of ''A Scandal in Bohemia'' due to the appearances of Irene Adler (the Woman who beat Holmes) and her lover Godfrey Norton and the case regarding Irene stealing a piece of information from a very important member of society which can be used as blackmail.

* ScoobyDoobyDoors: In the second episode, Holmes hires the Kabukicho Irregulars to send the Morstan siblings on a wild goose chase, culminating in a shot of the two chasing after "Holmes" back and forth down the back alleys of the city.

* MythArc: The show has an overall arc centering on the murders conducted by Jack the Ripper in Shinjuku.

*** One of the shops next to the Poppin flower shop is ''Garrideb''. Garrideb is one of Sherlock's client in the story ''The Three Garridebs''.

*** A pair of boxing gloves is seen hanging in Sherlock's apartment. It's shown in ''The Adventure of The Gloria Scott'', ''The Adventure of the Solitary Cyclist'' and ''The Adventure of the Naval Treaty'' that he's good in boxing. The movie ''A Game of Shadows'' also shows off Sherlock's boxing skills.

Holmes and Watson started to work together when they investigate a murder case alongside some private and actual detectives of the Tokyo Metropolitan Police Department dubbed ''Jack The Ripper''. From there, they tackle on cases that occur in Kabukichō and the surrounding areas.

Outside of Japan, Creator/{{Funimation}} has licensed it for streaming the original Japanese version with English subtitles and an upcoming English dub track in North America, Britain and Ireland while [=AnimeLab=] streams it in Australia and New Zealand. For Russia and Russian-speaking countries/territories, it is done by Wakanim. Dynit handles the show for Italy and Italian-speaking countries/territories and the show is exclusively aired in those places via Amazon Prime.

Outside of Japan, Creator/{{Funimation}} has licensed it for streaming the original Japanese version with English subtitles and an upcoming English dub track in North America, Britain and Ireland while [=AnimeLab=] streams it in Australia and New Zealand. For Russia and Russian-speaking countries/territories, it is done by Wakanim. Dynit handles the show for Italy and Italian-speaking countries/territories and the show is exclusively aired in those places via Amazon Prime,

Outside of Japan, Creator/{{Funimation}} has licensed it for streaming the original Japanese version with English subtitles and an upcoming English dub track in North America, Britain and Ireland while [=AnimeLab=] streams it in Australia and New Zealand. For Russia and Russian-speaking countries/territories, it is done by Wakanim. Dynit handles the show for Italy and Italian-speaking countries/territories.

*** The kid who runs into Watson in the parking lot and bumps into him is a reference to the Baker Street Irregulars.