In Shinjuku ward's east side lies Kabukichou, a vibrant city of chaos that glows brilliantly with neon lights but also hides unseen darkness. Employed at a university hospital on the west side, John H. Watson is looking for someone who can assist him with an odd case. His search leads him to the Pipe Cat, an underground bar that serves as a meetup venue and job board for some of the best detectives in Shinjuku, the most prominent among them being Sherlock Holmes. Upon finding the bar and meeting the peculiar investigators, John learns that they are pursuing a case involving Jack the Ripper, an infamous serial killer. Due to subsequent events, John ends up driving Sherlock to the crime scene of a murder supposedly carried out by Jack the Ripper. Even though John is only there to enlist Sherlock's help with his case, he witnesses Sherlock brilliantly uncover the truth behind the crime scene. However, he begins to realize that Sherlock is not only a genius detective but also an eccentric character. As John continues to request Sherlock to assist him with his case, he finds himself spiraling into the detective lifestyle of solving cases beyond the minds of ordinary civilians. Through this work, John begins to see the true colors of the chaotic city that is Kabukichou and starts to unravel the unsettling mystery behind his own case.

A fun collection of six short side stories depicting the past and present of Sherlock, Watson, Moriarty, and the rest of the Row House as they go about their everyday lives in their home of Kabukicho.

In 1999, a special mystery/paranormal investigative unit consisting of five youths is formed. The series uses a mix of real tokusatsu footage (vehicle scenes) and animation (character drama).

After surviving the onslaught at Sarugaku headquarters, Sousuke Banba resumes his investigation of the Kagewani monster hybrids. Armed with the ability to harness the Kagewani's power, the researcher now has a means to eliminate the creatures. But despite the benefits of this skill, it has one major drawback: Sousuke now struggles to maintain his sanity, with the power threatening to consume his body. Soon, threats old and new begin to rear their heads, as the upper echelons of Sarugaku become active once again and an assassin with a personal vendetta sets her sights on Sousuke. Nevertheless, he resolutely forges ahead on his mission, determined to track down the origins of the Kagewani and eliminate their threat once and for all.