She calls herself the Great Detective. "Siesta", is a code name. Her main weapon is a musket gun while she also has "Seven Tools" that contain special powers. Siesta is one of the Twelve Tuners as the famous detective.

She took [Kimihiko Kimizuka](https://anilist.co/character/161741/Kimihiko-Kimizuka) as her assistant four years prior to the main story.

Her real name, age, and nationality are unknown.

The story of Tantei wa mou, Shindeiru. follows Kimihiko Kimizuka, a young man who four years ago became the assistant of a mysterious detective known as "Siesta" on a hijacked airplane. Together, Kimihiko and Siesta went on mind-boggling, globe-trotting adventures while combatting a secret organization, but all of that came to an end when they were separated by Siesta's death. In the present day, Kimihiko tries to return to an ordinary, boring life as a high school student, but things are never that simple, even though the detective is already dead.
 
(Source: Crunchyroll, edited)

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. The detective, Siesta. Her angelically beautiful face and cool disposition in the face of plane hijackers swept me off my feet…and the next thing I knew, I’d spent the next three years off on a whirlwind adventure acting as her assistant. After all, I was the Watson to her Sherlock. But then…she died. It didn’t end there, though. No, our story only really began a year later when I met a bratty, snotty high school girl who seemed oddly familiar…
 
(Source: Yen Press)

The manga adaptation of the 2nd arc of the original light novel. 

A slice-of-life romantic comedy between a certain famous detective and her assistant from "The Detective is Already Dead."

Thwarting a hijacking with the beautiful, silver-haired detective, Siesta, transforms Kimihiko’s young life. Their success kicks off years of crime-solving and confronting syndicates around the world—until Siesta dies. Left with questions, Kimihiko moves on. But now, a new case may open healed wounds as it connects to an assassin, a world conspiracy, and his dead partner! 
 
(Source: Funimation) 
 
Note: The first episode aired with a runtime of ~46 minutes as opposed to the standard 24 minute long episode.

[Twitter](https://twitter.com/SAKI_MIYASHITA) | [Profile](https://haikyo.co.jp/profile/profile.php?ActorID=13083)

Saki Miyashita is a Japanese voice actress who was affiliated with Sigma Seven but is now affiliated with Haikyō.

[Website](https://www.xanthesvoice.com/) | [Twitter](https://twitter.com/ItsXanthor) | [Instagram](http://instagram.com/itsxanthor) | [Facebook](http://fb.me/ItsXanthor) | [YouTube](https://www.youtube.com/user/itsXANTHOR)

Xanthe Huynh is an American voice-actress of Vietnamese descent. Huynh's path to acting began during a course in theatre acting during an elective course while in middle school. She fell in love with acting and continued on the acting path throughout high school and her passion eventually led to her graduating with a degree in Dramatic Arts at the University of Irvine in California. 

Huynh also enjoyed anime as a hobby and confided in her friends if there was any way to combine her two loves. Her friends were supportive of the idea and pushed her to try out for Anime Expo's voice acting competition called AX Idol. She would eventually make it as a finalist and was invited to audition for, and eventually signed with Bang Zoom! Entertainment and is still currently working for them since 2008, and is currently based in Los Angeles, California. 

Since signing, Huynh has gone on to voice minor and major character roles in anime and video games in major productions. Besides voice acting, Huynh also enjoys cosplaying, which is proudly displayed on her Instagram. 

__Non-Anime Roles:__

- Pela - Honkai: Star Rail (VG)

A Mexican voice actress. She is known for being the Latin American Spanish voice of Nurse Joy in _Pokémon_ and Felicity Smoak/Overwatch  in the _Arrowverse_.

[Instagram](https://www.instagram.com/gabrielapellegrino) | [Facebook](https://www.facebook.com/gabrielafcpellegrino)

Gabriela Fernandes Costa Pellegrino, better known as Gabriela Pellegrino, is a Brazilian actress, voice actress, singer, and dancer.

__Non-Anime Roles:__
~!- Pike Trickfoot (The Legend of Vox Machina)
- Mouk (Mouk)
- Kitty Fairy (Gabby’s Dollhouse)
- Mikayla (Infinity Train)
- McKeyla McAllister (2nd voice - 2nd-6th season; Project Mc²)
- Nihan Sezin (2nd dub; Kara Sevda)
- Sydney Quinn (Prince of Peoria)
- Zoe Phillips (Free Rein)
- Amanda Brotzman (Dirk Gently's Holistic Detective Agency)
- Olivia (The Kissing Booth 1 and 2)
- Nazlı Gülengül (Mucize Doktor)
- Stella (Winx Club: La Magia dell'Italia)
- Sophia Greenleaf (Greenleaf)
- Paz Espinosa (El internado: Las Cumbres)
- Jenny "Fortune Cookie" Chey (Glow)
- Sophie Mercer (Warrior)
- Zoe Marconi (Nine Perfect Strangers)
- Num Nums (The ZhuZhus)
- Hunter and Arthrisha (Rick and Morty)
- Pete the Cat (Pete the Cat)
!~

Mini anime series featuring characters from Tantei wa mou, Shindeiru. where Kimihiko and Siesta discuss moments from the light novel, posted on the Kadokawa YouTube channel.

The second season of Tantei wa mou, Shindeiru.