

Before his death, the alchemist reveals that he was working for John Dee, the Queen's adviser. After Nobunaga decides to spare William and die again, Kelley is incensed to use Saoirse's energy to summon Yamata no Orochi. When he reaches Kelley, Nobunaga has been brought back from the dead. William pursues Kelley into the reconstructed Azuchi Castle, where he fights and defeats Yasuke. During the battle, William confronts Yoshitsugu, Sakon, and Mitsunari himself, learning that Kelley seeks to resurrect Nobunaga. Meanwhile, tensions between Ieyasu and Mitsunari continue to rise, leading to the battle at Sekigahara. Soon, William's exploits are noticed by Ieyasu who then decides to meet the man. He is aided in this battle by Nekomata, a cat spirit. William agrees and goes to Kyushu, where he saves Nagamasa from yokai. He encounters Hanzō, who explains the country's political situation and proposes an alliance - Hanzō will help William to track Kelley, if William will help with the fight against the Oni. William pursues him and eventually lands in Japan. Kelley captures Saoirse and flees to Japan, intending to gather the country's Amrita. Escaping thanks to Saoirse, he confronts the alchemist Edward Kelley. William is held prisoner in the Tower of London. He was originally a pirate hired by Elizabeth I to find Amrita, powerful spiritual stones, to help fuel the war efforts to defeat Spain. Saoirse saved him from death and now prevents him from dying and gifted him with the ability to see the normally invisible spirits. William is the main protagonist of Nioh growing up in a remote Irish village, he meets a guardian spirit called Saoirse who was born from human prayers.
