Yagami Clan

The Yagami Clan, formerly known as the Yasakani Clan , is a clan present in The King of Fighters series.

They are well known as one of the three clans who defeated and sealed away Orochi 1800 years prior to the events of the series, as well as their unique fighting style.

History
1800 years ago in the past, the serpent god Orochi could no longer tolerate the destruction of the Earth as a byproduct of human progression and wanted to completely wipe humanity from existence. It used the powers gained from nature purely as a tool for chaos. Its clan and the human race waged war until the Kusanagi, Yata, and Yasakani clans defeated it with the Three Sacred Treasures. Despite this, Yasakani are aware that they are not as famous as Kusanagi by the Shogunate

660 years later, Orochi's seal began to weaken. The three clans, decided to move its vessel into another location. Wanting to disrupt their unity, one of the Hakkesshu killed the leader of the Yasakani's wife. Under a disguise, the murderer then approached the Yasakani head and reported that the Kusanagi Clan was responsible, saying that it was "atonement" for letting the seal weaken. To add more fuel to the fire, the corpse of his wife was found in the Kusanagi homeland. Angered by the revelation, the Yasakani made a blood pact with Orochi to gain the necessary means for revenge. Changing the color of their flames from red to violet due to said blood pact, as well as gaining a forbidden technique called "Kin Sen Hyaku Juuichi Shiki: Ya Otome" (Forbidden Method 1211: Eight Maidens), the Yasakani renamed themselves as the Yagami clan. The two clans would never see each other eye to eye ever again, and their blood feud continues to this day, with the two clans current heirs, Kyo Kusanagi and Iori Yagami.

As a side-effect of the Orochi's curse, the once crimson flames of the Yagami have a bluish tint, as well as their black hair color transform red permanently, unlike other Orochi cursed individuals like Leona. The curse also causes each heir to die young and each mother to die in childbirth. This curse lives on in the current days, and has a critical effect on the life of Iori Yagami.

Due to time-displaced Shingo Yabuki's interference in The King of Fighters Side Story: The Origin of Flame - Shingo Travels Through Time! Let's Go!, Yagami Clan's fate, while remained cursed by Orochi has some altered outcomes, as well revealing that the first two victims who are killed by Hakkesshu before Magai's wife, Kaya to lure the said current heir of the clan into making a pact with Orochi by force, were Magahito (Magai's older brother) and Yakumo (whose corpse being possessed by Goenitz after the seal was broken). Besides Goenitz, the other two culprits who were sent by Orochi to turn Yasakani/Yagami into its servant were Mature and Vice. Despite Shingo's effort to prevent the clan's tragedy on saving Kaya, she found out about his second chance during his time-displacement situation in her timeline, and choose to let herself be sacrifice to save him, having had found peace that Magai and their son, as well as their descendants, despite remained cursed by Orochi, still have hopes in the future while still accepting her fate from original timeline. Because of Shingo's interference, Hakkesshu to plans change after using Kaya as a sacrifice to break Orochi's seal, and reveals their true intention to Magai before implementing the curse on the clan and transform them into Yagami through the said current heir by force.