nigozyu

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nigozyu's Latest Book

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  • Bibliography:
    16 Books
  • First Book:
    July 2021
  • Latest Book:
    June 2025
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Book List in Order: 16 titles

  • The Detective Is Already Dead, Vol. 1

    When the story begins without its hero Kimihiko Kimizuka has always been a magnet for trouble and intrigue. For as long as he can remember, he’s been stumbling across murder scenes or receiving mysterious attache cases to transport. When he met Sie...

  • The Detective Is Already Dead, Vol. 2

    I just knew it. When I, Kimihiko Kimizuka, agreed to help Nagisa Natsunagi find her heart donor, I should’ve realized I was being dragged into something troublesome. Actually, I had an eerily similar feeling four years ago when I met Siesta on that...

  • The Detective Is Already Dead Manga, Vol. 1

    The dead detective and her assistant come to life in this manga adaptaion! I, Kimihiko Kimizuka, was an ordinary high school student. Sure, I had a penchant for getting dragged into all sorts of trouble, but was otherwise ordinary-until I met her. T...

  • The Detective Is Already Dead, Vol. 3

    Due to my penchant for getting dragged into things, I, Kimihiko Kimizuka, an ordinary high-school student, suddenly was asked to protect national idol Yui Saikawa's Three-billion-yen sapphire!? When there's a detective, there's always a case, and s...

  • The Detective Is Already Dead Manga, Vol. 2

    I just knew it. When I, Kimihiko Kimizuka, agreed to help Nagisa Natsunagi find her heart donor, I should’ve realized I was being dragged into something troublesome. Actually, I had an eerily similar feeling four years ago when I met Siesta on that...

  • The Detective Is Already Dead Manga, Vol. 3

    Due to my penchant for getting dragged into things, I, Kimihiko Kimizuka, an ordinary high-school student, suddenly was asked to protect national idol Yui Saikawa's Three-billion-yen sapphire!? When there's a detective, there's always a case, an...

  • The Detective Is Already Dead, Vol. 4

    To celebrate a job well done, I, Kimihiko Kimizuka, have set out on a cruise with the ace detective, Nagisa Natsunagi, and our new ally, Yui Saikawa. However, a detective’s work is never done -- not even a dea...

  • The Detective Is Already Dead, Vol. 5

    Reunited with Siesta, Kimihiko is pulled back into action as assistant to the Ace Detective. Together, the two face off against Seed again and, with a little extra help, defeat him. Although that particular crisis may be over, the journey to awaken N...

  • The Detective Is Already Dead, Vol. 4 (manga)

    This time, the stage is a luxury ship. Carrying the dying wish of the ace detective in their hearts, Kimizuka and his allies challenge a new enemy -- Chameleon. While confronting the past, they stride towards the future. ...



  • The Detective Is Already Dead, Vol. 6

    Siesta and Kimihiko’s first meeting did not take place during that fateful plane hijacking but rather four years earlier, when the Federation Government tasked Siesta with locating a spy in Japan. During her undercover investigation, she happened u...

  • The Detective Is Already Dead, Vol. 7

    The second act is about to begin.The adventure of the detective and her assistant began ten thousand meters above the earth. They helped clients, solved cases, fought powerful enemies, and traveled all over the world -- and then the detective died. T...

  • The Detective Is Already Dead, Vol. 5 (manga)

    “Now we know what we’re up against…!” With a little help from Charlotte Arisaka Anderson and a surprise appearance by the late detective herself, I, Kimihiko Kimizuka, was able to defeat the devious pseudohuman Chameleon who attacked us durin...

  • The Detective Is Already Dead, Vol. 8

    “Let’s go on a journey to unlock the world’s secrets.”Kimihiko Kimizuka was once the assistant to two Ace Detectives, and after achieving a miracle, the sequel to the story was ordinary life. The Ritual of Sacred Return was supposed to be the...

  • The Detective Is Already Dead, Vol. 6 (manga)

    “What could they want with Yui…?”Nagisa Natsunagi and I, Kimihiko Kimizuka, were finally able to uncover the mystery of the Ace Detective Siesta’s death by drawing out Nagisa’s other personality, Hel—and the truth ...

  • The Detective Is Already Dead, Vol. 9

    “Let me tell you the story of a man who lived and fought through each and every day.”With the world in peril once again, Kimihiko Kimizuka returns to his role as the Ace Detective’s assistant and sets out on a journey to recover the...

  • The Detective Is Already Dead, Vol. 10

    Kimihiko Kimizuka, working as the Ace Detective’s assistant to recover the lost records of the world, comes to the conclusion that Arsene, the Phantom Thief, may be the cause of this strange phenomenon. Believing the identity of the Phantom Thi...

Frequently Asked Questions (FAQ)

nigozyu has published 16 books.

The next book by nigozyu, The Detective Is Already Dead, Vol. 10, will be published in June 2025.

The first book by nigozyu, The Detective Is Already Dead, Vol. 1, was published in July 2021.

No. nigozyu does not write books in series.
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