On April 12, the 27th installment of Detective Conan officially premiered in Japan. This time, the main characters are the “phantom thief” Kaito Kid and the “detective from the West” Heiji Hattori. Fans have high expectations for an engaging mystery-solving adventure. However, after the first screening, the most shocking detail about the film revealed a deep connection between Conan and Kaito Kid.

Specifically, in this latest installment of Detective Conan released in Japan, many viewers were astonished by the revelation that Kaito Kid and Conan (or Shinichi Kudo) are actually brothers. According to Yusaku Kudo – Shinichi/Conan’s father, his relationship with Yukiko in the film indicates that their mother divorced when he was very young. His mother took him with her, while his father took his brother, Toichi Kuroba, to lead a separate life. Furthermore, Toichi is still alive.
This information not only confirms that Yusaku and Kaitou Kid are biological brothers but also implies that Conan/Shinichi and Kaito Kid are actually half-brothers, sharing a real bloodline.

The article reveals that Yusaku and Toichi are biological brothers, leading to Shinichi Kudo and Kaito Kid being half-brothers in the 27th film currently screening.

Conan and Kaito Kid are indeed half-brothers.
This surprising revelation in Detective Conan: The Scarlet Bullet has caused quite a stir among netizens. Many have taken to social media to react to this unexpected detail. Some have even lamented that the iconic “Shinichi – Kaito” relationship from previous films has now been “ruined”.

“It feels like a funeral when you hear that Shinichi – Kaito are actually brothers. My condolences,” a netizen expressed their disbelief over the news that Conan and Kaito Kid are half-brothers, receiving nearly a million views.

“To say ‘I hope the relationship between the two of you can be confirmed as brothers in a movie released after more than 20 years’ is truly too smart and shocking,” another netizen commented.
According to the details previously revealed, Gosho Aoyama was involved in the scriptwriting, developing the storyline for this 27th film, similar to his role in previous installments. Thus, this detail is indeed an official addition by the creator into the film. Many long-time fans are skeptical of this detail, arguing that what happens in the film is “not canonical” compared to the events in the manga.


Viewers are partial to the film.
However, the fact that Conan/Shinichi and Kaito Kid are half-brothers explains many things. For instance, their appearances have always resembled each other like twins. Moreover, the relationship between Yusaku and Kaitou Kid Toichi has long been “implied.” In fact, Yusaku was the one who created the alias “Kaito Kid” for Toichi.
Currently, Detective Conan: The Scarlet Bullet is being screened in Japan, with no release date yet scheduled for Vietnam or globally.