Daigotsu Yajinden

Daigotsu Yajinden was born Asahina Yajinden. He was the lieutenant of the maho-tsukai Iuchiban and the creator of the Bloodswords. He joined Iuchiban because his thirst for knowledge and power was greater than his will. It was whispered for centuries that Yajinden never truly died, but in any case the exact date of his death was forgotten and never celebrated. (Crane p. 89)

Bloodswords
The Bloodswords are four katana forged by Yajinden in 508 using the Anvil of Despair. Each weapon was of exceptional quality, and granted its wielder unnusual abilities as a powerful nemuranai. Each sword was also cursed, however, and its owner would eventually be obsessed by the trait for which each katana was named. The bloodswords were each gifted to a daimyo of a Great Clan with the intent that the weapon would destroy them, causing confusion in the Empire and aiding Iuchiban's attempt to dominate Rokugan. (3E p. 13)

Battle of Stolen Graves
At the Battle of Stolen Graves Yajinden acted as Iuchiban's shireikan and was called Teh Kurai no Iuchiban (The Dark Hand of Iuchiban). After the battle Yajinden was captured by his family, the peaceful Asahina, but they decided not to kill him. They magically erased his memory and let him live out his final days peaceful as a gardener. Or so they believed. (Crane p. 45)

Servant
However, this was not the end of Yajinden's story. He had discovered a method of immortality that involved trading bodies with another person, allowing him to transfer his conciousness between bodies for centuries. With the rise of Iuchiban in the 12th century Yajinden was forced to serve him again. After the destruction of Iuchiban, he became a sworn servant of Daigotsu.

Asako Kinuye
Yajinden has a strange relationship with Asako Kinuye, the Phoenix Clan Bloodspeaker. It seems that she owes her life to Yajinden. It is not known if his Lost companions are aware of this.

Spider Clan
Yajinden joined the Spider Clan following it's creation by Daigotsu.