Ace Attorney Wiki
Yujin Mikotoba
Image Gallery Sprite Gallery
This article contains information about Ace Attorney media that has been
recently released and thus likely contains spoilers!
Steel Samurai.png
The information in this article comes from a game, demo, or other media that has been recently released worldwide. This article may need input from an editor who has personal experience with the media in question. If you have, you can help the Ace Attorney Wiki by expanding this article. Please heed the manual of style when adding information.

Readers of this page should be aware that this article likely contains MAJOR SPOILERS concerning the media in question.

You have been warned!

This article or section may require a cleanup.
Adrian drops the urn.png This article or the section of it requires a cleanup. As such, you can help with the cleanup, by adding beneficial information to this article or the section. If you need writing style help, please consult the manual of style. You are welcome to discuss this issue in the talk page of the article.
We need more pieces to finish this puzzle.
Bad Pearl.png This article is under construction. While it is not short, it still needs expansion as outlined in the manual of style. The article most likely needs expansion near the end of the tagged section or sections.

Yujin Mikotoba was a forensic pathology professor at Imperial Yumei University and Kazuma Asogi's mentor. Shortly before Ryunosuke Naruhodo's trial for the murder of John Wilson, he instructed Naruhodo to take over the defense from Asogi so not to jeopardize the latter's study abroad. A year later, he assisted his daughter Susato (then disguised as "Ryutaro Naruhodo") to defend Rei Membami.

A child in need[]

Main article: Professor Killings

The chest containing records of all his adventures with Sholmes.

Sometime after the death of his wife, Mikotoba left his daughter, Susato, in the care of her grandmother and traveled to England with Genshin Asogi and Seishiro Jigoku to study abroad. Whilst there, he worked at the St. Synner's Hospital alongside John Wilson and his partner Courtney Sithe. He also shared a flat with London's soon-to-be legendary detective, Herlock Sholmes, eventually becoming his investigative partner. He wrote down all the adventures they had together and locked them in a chest in Sholmes' flat.

When the secret trial for the Professor was held, Mikotoba took part in the autopsy of Klint van Zieks as first assistant and was responsible for writing the autopsy report. Though Mikotoba had qualms about the findings of the autopsy, he wrote down John Wilson's findings dutifully -- Genshin Asogi's ring was discovered in Klint van Zieks' stomach. As such, Genshin Asogi was convicted as the Professor.

During Mikotoba's last visit to Genshin's cell, Genshin asked for one final favour, and gave him an address to go to. Mikotoba acquiesced, and when he arrived he found a woman in critical condition and about to give birth. He helped to deliver a baby girl, but could not save the mother. Upon looking around the room and noticing a certain crest, Mikotoba realised that the baby he had helped to deliver was the child of Klint van Zieks, and the woman who had died was his wife.

As he had to return to Japan immediately, he left the baby in the care of Herlock Sholmes. He named the baby Iris, after his wife Ayame. Upon his return, he told Genshin's son, Kazuma, that his father died of an illness, and took him in.

Naruhodo's first trial[]

Main article: The Adventure of the Great Departure

Mikotoba first appeared with his daughter Susato when Kazuma was getting ready to defend his best friend, Ryunosuke Naruhodo, for the murder of John Wilson before his own study abroad. He told Kazuma to go to the judge's chambers with Susato before revealing to Naruhodo that Kazuma would not be able to go on his trip if he lost the trial. Yujin told him to say "I am" when Judge Jigoku asked a question.

That question was "Who is standing for the defendant?", which meant that Naruhodo defended himself. During the recess, Kazuma was mad a Yujin thinking he didn't have what it took. Yujin reveals that he was the one who invited Wilson overseas to become a professor. Eventually, Wilson's killer was revealed to be a British woman named Jezaille Brett. When her crimes were revealed, Yujin announces with Satoru Hosonaga that Brett could never be tried in Japan due to the consular court of Great Britain. So she would soon be sent to Shanghai, the group then went off to celebrate.

Yujin caught Susato looking at the box containing the manuscript for the Professor Killings while she was cleaning before accompanying Asogi. He told her never to tell anyone about what she saw.

Calling back Susato[]

Main article: The Adventure of the Unspeakable Story

About nine months after John Wilson's death, Yujin received a letter from Sholmes about the "Case of the Haunted Lodging", it contained the dog collar Klint's dog wore during the Professor Killings. Remembering that Susato saw the box containing the manuscript, he was worried that her daughter might soon reveal that Iris' father was a serial killer and didn't think she could handle it. So he sent a telegraph to Susato saying he had an illness and she needed to come back. He also appeared on the steamship Soseki Natsume was on when he was returning to Japan asked him about the incident.

Assisting Susato[]

Main article: The Adventure of the Blossoming Attorney

In the newspaper with Soseki Natsume

Yujin then spoke to Natsume during a lecture at Imperial Yumei University, the author was accompanied by Raiten Menimemo, a reporter for the Shoyu News. Then he went off for some work to do. Meanwhile, Jezaille Brett, we one day left before she would leave for Shanghai, was killed in a bathhouse. The suspect was one of the late Dr. Wilson's students and Susato's best friend, Rei Membami.

As women in Japan were not allowed to be attorneys, Susato decided to disguise herself as "Ryutaro Naruhodo", cousin of Ryunosuke Naruhodo, to defend Membami. Yujin was impressed at his daughter's disguise but feared that her nervousness will give herself away. Before the trial, he informed Jigoku of the situation so that things could go more smoothly for Susato. He then acted as his daughter's counsel while she defended Membami and indicted Menimemo as the real killer.

After the trial, Yujin was approached by Susato as to why she was allegedly called back to Japan because of his sickness, when he was actually well. But their conversation was cut short when Menimemo appeared and asked Yujin about his connections to Kazuma, and later went off to spend time with Jigoku.

Return to England[]

Main articles: Twisted Karma and His Last Bow & The Resolve of Naruhodō Ryūnosuke

Yujin first appears in the Bandol Hotel with Jigoku.


  • His given name "Yūjin" (悠仁) is homonymous with the term "友人" (ゆうじん), meaning "friend", referencing his friendship with Wilson, Sholmes, Jigoku, and Asogi.
  • His family name "Mikotoba" (御琴羽) is homonymous with the expression "御言葉" (みことば), which can either mean "word of God" or "to take someone at their word".


  • At age 43, Mikotoba is the oldest viewpoint character in the series to date.