A series of 17 short cases of Kindaichi.

A sequel set two years after the events in Tantei Gakuen Q and the fall of the murder-planning syndicate Pluto, the story follows the students of Class Q under the new Principal Nanami as they solve mysteries, trying to live up to the legacy of the legendary detective who started their Detective School. But is Pluto truly gone, and what became of Cerberus, the high-ranking official who escaped two years ago?

Threatening Notes. Locked Rooms. Impossible Murders. We've seen detectives solve them all, but how did they come about in the first place? How does a culprit check into a hotel without taking off his mask? How much does it cost to set up an elaborate trick? What's the right font to use while writing a scary message? Presenting all these and more, in a hilarious retelling of the best Kindaichi stories, but this time, from the culprit's point of view! Can the culprit successfully pull off his crimes with the young detective watching on?

A side series of Young Kindaichi's case file. The cases in this series are: 1. "File 1 The First Case of Young Akechi/Alternative title: Farewell, My Dear Friend" (FILE1 明智少年最初の事件, "Fairu Ichi Akechi Shōnen Saisho no Jiken"?) 2. "File 2 Quartet with Intent to Kill/Alternative title: The Perfect Violinist, Akechi" (FILE2 殺意の四重奏, "Fairu Ni Satsui no Karutetto"?) 3. "File 3 Ghost Swordman Murder Case/Alternative title: The Pride Murder)" (FILE3 幽霊剣士殺人事件, "Fairu San Yūrei Kenshi Satsujin Jiken"?) 4. "Special Story Kengo’s Room" (スペシャルストーリー 健悟の部屋, "Supesharu Sutōrī Kengo no Heya"?) (Source: Wikipedia)

This iteration features a return to the teenage era Kindaichi, where he yet again solves cases alongside Miyiki, with the help of trusty Inspector Kenmochi.

Side story of the Young Kindaichi Case Files. The cases in this series are: 1. "File 1 Testimony Puzzle/Alternative title: The Murder Train" (FILE1 証言パズル, "Fairu Ichi Shōgen Pazuru"?) 2. "File 2 Killing Poker/Alternative title: Unlucky Men in the Rain" (FILE2　殺人ポーカー, "Fairu Ni Satsujin Pōkā"?) 3. "File 3 Dead Person's Checkmate/Alternative title: The Great Chess Player, Akechi" (FILE3 死者のチェックメイト, "Fairu San Shisha no Chekkumeito"?) 4. "File 4 Ghost Hotel Murder Case/Alternative title: The Encounter" (FILE 4 幽霊ホテル殺人事件, "Fairu Yon Yūrei Hoteru Satsujin Jiken"?) 5. "Special Story Supt.Akechi Morning's Pretty Scenery" (スペシャルストーリー明智警視　優雅なる朝の風景, "Supesharu Sutōrī Akechi Keishi Yūga Naru Asa no Fūkei"?) (Source: Wikipedia)

It's the story of a trip from a teens league of friends in Tokyo of the 80's till today, mirroring their paths and relationships.

The year is 1990. Kosaku Shima, at this point still just a section manager, meets a woman at a bar. However, when he wakes up, he finds that the woman has been strangled. With the help of his detective friend Kyusaku, he sets out to find the real killer and prove his innocence.

One day, Amakusa Natsuki—the hope of the Tokyo Metropolitan Police Department—meets an unusual high schooler named Shiki Yuuya. Natsuki's interest in the high schooler is piqued after Yuuya happens to be passing through the scene of a difficult murder case and determines the perpetrator with ease. How did he know who the killer was? When an incident later takes place at Yuuya's high school, the two happen across each other again... Thus, a young policeman and a high schooler with a hidden power begin unraveling the mystery!

Shishi Sakurazaka, a soccer player in his third year of middle school. He has speed that puts dedicated track runners to shame, but has no talent for shooting a goal, which has led to him being an eternal benchwarmer. But one day, while playing an online soccer game, he meets a genius gamer.

Mio Kamishiro, aged 37. It's been almost a year since she remarried her savior, Masato, and their days have been nothing but bliss. That is, until she gets swept back up into the muddy tides of fate after a female reporter is found murdered in her neighborhood.