Umibouzu Umibouzu – författare

After saving the world from collapsing, the two Ace Detectives and their assistant, Kimihiko Kimizuka, are immediately thrust into the next crisis: the Tuner Hunt. But when the likely culprit surfaces, it turns out to be the most unforgettable girl of all! Meanwhile, a client visits the Shirogane Detective Agency claiming to have been reunited with Kimihiko’s teacher—a man who supposedly died eight years ago. What is real and what is fake? What’s true and what’s a lie? Within four locked rooms, Kimihiko is forced to ask himself what he wishes for and who he really is—questions no one can run from.

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. The story should have ended there. But a year later, one girl’s passion set it in motion again. After many battles and sacrifices, a miracle was granted. Now that it’s all over, Kimihiko Kimizuka is basking in the ordinary life that comes afterward. (Am I okay with that, you ask? Sure. It’s not like I’m causing trouble for anybody. I mean, it’s true, isn’t it? The detective is already—)

With the world in peril once again, I, Kimihiko Kimizuka, returned to my role as the Ace Detective’s assistant and set out on a journey to recover the lost memories of humanity. Following a trail of leads and using the Sacred Relic discovered by the Oracle, we sought to investigate a crisis from a certain world in the past, and the Vampire Scarlet was at the center of it. But the deeper we delved, even the harrowing truths that were once beyond our reach began to bubble to the surface. This is the story of detectives who continued to pursue the mysteries that remain hidden from the world—and the story of a Vampire King who defied the injustices of the world and fought ’til the very end.

All I wanted was to be a regular highschooler, and that wish is why I'm here right now. My name is Nagisa Natsunagi, and I'm just a high school girl, nothing more-not yet anyway. If there's one thing that's different about me, it's that, up until recently, I was too sick to come to school. Miraculously, I received a new heart, and the surgery was successful. Now I'm finally living the life I always wanted! But I can't help wondering about my donor...I hear there's a boy in town who can solve any case. Maybe he can help me?

Nagisa Natsunagi was enjoying her daily routine with her two best friends, finally living out her dream of being a normal high school girl—at least, until she finally found the detective she was looking for. The summer afterward was full of adventures and new encounters, but now that she’s back at school with her friends, will she be able to find that normal life again?

Having learned the truth of the Akashic records, Kimihiko Kimizuka, the Ace Detective, and their companions reach the System, the final piece needed to restore the world’s missing history. There, they recover all their memories of the Great Cataclysm, and Kimihiko is reminded of a promise he once made that will help him awaken the sleeping beauty and get their happy ending. However, the Singularity is forced to make an ultimate choice… The detective is already dead—but there’s no way Kimihiko is going to let it end that way. Even if people end up calling him the Great Cataclysm!

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 Siesta, a brilliant detective fighting a secret war against an organization of pseudohumans, he couldn’t resist the call to become her assistant and join her on an epic journey across the world. …Until a year ago, that is. Now he’s returned to a life that is normal and tepid by comparison, knowing the adventure must be over. After all, the detective is already dead.

WHO WERE YOU TO HER? WHO WAS SHE TO YOU?​While on an outing one day, Kimihiko Kimizuka and his three friends are kidnapped by…Siesta herself?! But they soon learn there’s more to the story as she reveals the long-forgotten truth about Siesta’s death. Will this be the clue that finally unlocks the secrets of Kimihiko's past?

What’s wrong with this story? After being kidnapped, Kimizuka, Natsunagi, Saikawa, and Charlie have learned the truth about Siesta’s death...or have they? A girl who looks just like the deceased appears and informs them that the footage they’ve been investigating contains an error. As they hunt for an answer to a mystery that even Siesta couldn’t uncover, the group will learn what it truly means to inherit the legacy of an ace detective. Though the detective may already be dead and the truth of her passing revealed, it’s still too early for the epilogue…

Once the assistant to a great detective, Kimihiko Kimizuka took on a challenge Siesta bequeathed to him after her death and arrived at a conclusion that surpassed his wildest expectations. To bring back the great detective—the stuff of miracles—Kimihiko and Natsunagi fly to London yet again to obtain evidence that can bring down Seed. On the flight there, however, he hears the same words as he did four years ago: “Is there a detective on the plane?”