"Kindaichi Shōnen no Jikenbo R" is a continuation of the original "Kindaichi Shōnen no Jikenbo" series, focusing on the adventures of Hajime Kindaichi, a high school student and grandson of the famous detective Kosuke Kindaichi. Despite his unassuming appearance and often lazy demeanor, Hajime possesses exceptional deductive skills and a sharp intellect, which he uses to solve complex murder mysteries. The series maintains its signature blend of intricate puzzles, dramatic reveals, and a focus on the "whodunit" format, with each case typically spanning multiple chapters.

The narrative structure revolves around standalone cases, each presenting a new mystery for Hajime to unravel. These cases often involve elaborate schemes, locked-room scenarios, and a cast of suspects with hidden motives. Hajime is frequently accompanied by his childhood friend, Miyuki Nanase, who provides emotional support and occasionally assists in investigations. Inspector Isamu Kenmochi, a recurring character from the original series, also appears, offering professional insight and collaboration with Hajime.

The cases in "Kindaichi Shōnen no Jikenbo R" are characterized by their detailed setups and meticulous attention to forensic and psychological elements. The stories often explore themes of justice, morality, and the consequences of crime, with a focus on the human emotions driving the perpetrators. The series reintroduces familiar elements such as the "Challenge to the Reader" segment, where readers are invited to solve the mystery before the solution is revealed.

New characters are introduced alongside returning ones, adding depth to the narrative and expanding the scope of the mysteries. The series retains its balance of suspense, intellectual challenge, and occasional moments of humor, staying true to the tone of its predecessor. Each case concludes with Hajime piecing together the clues, often in a dramatic confrontation with the culprit, leading to a resolution that ties together the intricate plot threads. The series continues to appeal to fans of detective fiction, offering a mix of classic mystery tropes and innovative storytelling.