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Satoru Hosonaga
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Satoru Hosonaga was a waiter at La Carneval who appeared as a witness in the trial of Ryunosuke Naruhodo for the murder of John Wilson. He was in actuality the police first squadron investigation leader, detective, and Department Chief. His true identity was uncovered because the restaurant layout he scribbled on the back of his business card was submitted as evidence to the courtroom.

Undercover at La Carneval[]

Main article: The Adventure of the Great Departure

As a waiter.

At the "La Carneval" restaurant, Hosonaga witnessed Naruhodo holding a gun and standing in front of the corpse of Dr. Wilson, prompting the detective to arrest the student on charge of murder. After bringing Naruhodo into the kitchen, Hosonaga confiscated all of the evidence he could find, which included beefsteak dishes that were eaten by two witnesses. This was to preserve the crime scene as much as possible.

Three days later, Hosonaga appeared in court as a witness for Naruhodo’s trial. When he submitted a card depicting the layout of the crime scene, his cover is blown when it was discovered that the card was his business card as a detective. Later, Naruhodo figured that Jezaille Brett was present during the time of the crime, so Hosonaga was sent to bring her to court. He initially served as a translator for Brett, but was later surprised that she could speak fluent Japanese without his help. Later, Hosonaga brought out Brett’s beefsteak so Naruhodo and Kazuma Asogi could find the bloodstain that he saw, but to no avail. However, it was revealed that Iyesa Nosa switched his beefsteak with Brett’s before Hosonaga confiscated them in order to hide the coin that he stole from Kyurio Korekuta. So Hosonaga brought in the second beefsteak, which contained the bloodstain that Naruhodo and Asogi were looking for. Thus, the defense proved that Brett murdered Dr. Wilson and framed Naruhodo for the crime. However, Brett did not reveal any motives.

Later, Hosonaga informed Naruhodo and Asogi that Brett was heading for Shanghai and would not be put on trial in Japan due to the trial consul's authority. Regardless, the detective invited the students to La Carneval to celebrate their victory with Yujin and Susato Mikotoba.

Aboard the SS Burya[]

Main article: The Adventure of the Unbreakable Speckled Band

As a sailor.

Hosonaga was assigned to escort Asogi on his journey to London as a bodyguard, infiltrating the steamship SS Burya and disguising himself as a sailor. But about a month later, the exchange student was found dead in his cabin. Furthermore, Naruhodo was found by the Great Detective, Herlock Sholmes, unconscious inside the closet and was once again arrested for murder. Hosonaga was ordered by the captain to keep an eye on the crime scene and Naruhodo. Feeling guilty for not being able to protect Asogi, Hosonaga allowed Naruhodo and Susato to inspect the cabin next door for clues while he tried to persuade the captain to let them do so. Unfortunately for the detective, he was severely beaten by the captain, who did not listen to his request. Regardless, Naruhodo was able to prove his innocence and figured out that it was the ballet stowaway, Nikolina Pavlova, who took Asogi’s life.

Naruhodo was cleared of all charges against him, but Hosonaga informed him and Susato that they had to return to Japan because they no longer have an exchange student. However, Naruhodo proclaimed that he would take Asogi's place and study the law.

Later, after sending Nikolina Pavlova to Shanghai, Hosonaga decided to infiltrate the Steamship Burya and remain a sailor. It was there he met and picked up soon-to-be author, Soseki Natsume, who was enraged that holding a mere kitten that Wagahai had was an offense.

Guarding a foreign criminal[]

Main article: The Adventure of the Blossoming Attorney

In his swimming outfit.

After returning to Japan, Satoru Hosonaga was assigned to guard Jezaille Brett as she wanted to spend her last moments of Japan on a beach, it was close to the day she would leave for Shanghai and the empire would finally be done with her. There, he wore a black and white swimsuit with a toy turtle on his head and met Soseki Natsume again, this time with his reporter, Raiten Menimemo. Suddenly, he heard a noise in beach house where Brett was. He and Natsume came in to find what appeared to be a girl named Rei Membami stabbing the British woman to death.

Susato Mikotoba, disguised as "Ryutaro Naruhodo", figured out a contradiction when the inspector said that Brett was stabbed multiple times despite the autopsy report saying it was only once, suggesting that Membami might have been trying to save her. But that barely changed anything, Hosonaga then requested a testimony on forensic medicine saying blood would gush out of Jezaille Brett's body, he knew that since he studied health. Then he gets presented a newspaper saying a drug was stolen from Imperial Yumei University lab. Eventually, Susato proved that Menimemo was the real killer.

Satoru Hosonaga doesn't show up until after the trial, where he and Soseki Natsume are surprised that "Ryutaro Naruhodo" was a girl. Then he laments that now they'll never know why Jezaille Brett killed John Wilson.

Truth revealed[]

Main article: The Resolve of Ryunosuke Naruhodo

Jezaille Brett was actually an assassin named Asa Shinn sent by London's chief justice, Mael Stronghart, to keep Dr. Wilson from talking about how he forged an autopsy report from a serial killing incident. English detective Herlock Sholmes, who said he was Naruhodo, told him to infiltrate the office of Seishiro Jigoku and send the telegram regarding the assassin exchange program. Taketsuchi Auchi attempted to press charges against Hosonaga for this. The Japanese detective hired Rei Membami and Soseki Natsume to be his defense attorneys but he seemed to regret it.



Satoru Hosonaga is an honest and hard working detective, doing his best to ensure that his assignments were completed in a swift manner. When he failed, he would do his best to make up for it, as shown when he "put his life on the line" to allow Naruhodo to investigate Asogi's "death."

Hosonaga was also determined to improve Japan's police force and courts, doing this by stealing evidence from the crime scenes in order to avoid tampering. He easily got excited at the idea of "improving the standards", and took offense to Brett's insults to the police force.

It would appear as if he has a lung disease, as whenever he coughs, his mouth begins to dribble blood. However given the games take place in the Meiji Period and not in modern times, this strongly implies that he has tuberculosis. According to the official art book, his family owns a soba shop but he has a buckwheat allergy that he has not noticed, which may be another reason for the coughing.


  • The kanji for his given name "Satoru" roughly means "enlightenment", as used in the verb 悟る (satoru), meaning "to perceive; to sense; to discern" and the noun 悟り (satori), meaning "comprehension; understanding".[2] The speech bubble "Satorha!" from Phoenix Wright: Ace Attorney - Spirit of Justice has the same origin. "Hosonaga" is composed of the kanji for "thin" and "tall".