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.

Two OVAs released with the 8th and 10th volumes of the original novel. They fall chronologically between the first and second seasons.

The desperate battle in Kamihama City continues to intensify. With Walpurgis Night changing course for Mitakihara City, all eyes shift toward Embryo Eve—an artificial being, currently dormant, that can allegedly liberate magical girls from their destinies. As the Wings of Magius grow dangerously close to executing their plan, Iroha Tamaki's last chance to stop the organization is quickly fading. Despite the dwindling odds, lingering hope for the dawn of a better future invigorates her final endeavor, while also uncovering memories of a story tampered with by the hands of fate.

The Servamps and their pact-bound "Eves" are finally getting back to their normal lives as they recover from their injuries from the previous battles. However, when it starts snowing in the middle of summer, one of the Eves, Mahiru Shirota, suspects vampiric interference. Concerned by the strange phenomenon, he sets out to gather the group once more to try and solve the mystery; however, they suddenly lose contact with Misono Arisuin, the Eve of the Servamp of Lust. Servamp Movie: Alice in the Garden delves into the untold past of Misono and his brother Mikuni Arisuin, as well as the many mysteries of the grand Arisuin Mansion. [Written by MAL Rewrite]