Umibouzu Umibouzu

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...

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...

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...

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 upon her future assistant, who had a connection with the spy she was looking for. With Kimihiko as her only lead, she enlisted...

The Detective Is Already Dead, Vol. 2 by Nigozyu Nigozyu and Umibouzu Umibouzu. 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...

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 travelled 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...

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...

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...

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...

When does the story begin 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 attaché cases to transport. When he met Siesta, a brilliant detective fighting a secret war against an organisation of pseudohumans, he couldn't resist the call...