Yatagarasu Key 1

The "knife" part.

Yatagarasu Key 2

The "key" part.

The so-called "Yatagarasu's Key" is a device that appears to turn from a knife into a key, and vice versa, when a switch on the end of the handle is released. The "key" portion is needed to unlock a safe in the Cohdopian embassy, revealing interior and a sort of latch hole. The latch hole is actually a second "keyhole" into which the "knife" portion of the key fits to reveal a secret back compartment of the safe. Manny Coachen used this secret compartment to hold stolen items for a smuggling ring.

The murder of Byrne FaradayEdit

Main article: Turnabout Reminiscence
The True Yatagarasu

The Yatagarasu.

Byrne Faraday who was one of three people who went under the guise of the Great Thief Yatagarasu. He infiltrated the secretariat's office at the Cohdopian Embassy and stole the key. However, in an unexpected move, Calisto Yew, another member of the Yatagarasu, sent the key to the police. Being the first piece of evidence directly sent to the police by the Yatagarasu, it was quickly coined as the "Yatagarasu's Key", although no one other than Yew and Coachen knew of the key's dual nature.

In reality, Yew was a mole working for an international smuggling ring, and her actions were part of a plan to get rid of Faraday. She instructed a hitman, Mack Rell, to kill an embassy staff member called Deid Mann, but the thug was caught on a security camera red-handed and put on trial for the crime. Yew then offered to be his defense attorney, telling him to initially claim to be the Yatagarasu; in court, he would suddenly accuse Faraday, who was to prosecute the case, of being the Yatagarasu.


Yew moves to stab Faraday.

As Yew had expected, Faraday brought the key with him to the courtroom, intending to prove that Mack Rell was not the Yatagarasu by asking him about the function of the key. When Rell made his accusation towards Faraday, the trial went into recess, and the prosecutor took Rell to Defendant Lobby No. 2 to question him. Yew then entered the room and used the "knife" portion of the Yatagarasu's Key to murder both Faraday and Rell.

The murder of Manny CoachenEdit

Main article: Turnabout Ablaze
We need more pieces to finish this puzzle.
Bad Pearl 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.

Seven years later, Manny Coachen used the key in self-defense against Quercus Alba by thrusting it into his left shoulder, resulting in a deep, hemorrhaging wound. However, Alba survived and fatally stabbed Coachen with a knife of his own. Alba cleaned off the key and replaced it in Coachen's pocket, then left the body in Coachen's own office, intending for the investigators to use the key to open the safe in that office and find papers related to the smuggling ring. Alba's intent was for Coachen to be believed the leader of the smuggling ring; however, Miles Edgeworth's investigation unmasked Alba as the leader, with the Yatagarasu's Key being the final evidence used to prove his guilt.