Onibi (in Japanese: 鬼火 meaning Wildfire) is a ninja who, along with his fellow ninja assassins, are employed by the Nakatomi Corporation, and a villain in Nightshade. He is known as the "Shinobi of Fire".
He is the second shinobi who confronts Hibana. He is attracted to Hibana and wants her to kill him.
Onibi is an exiled shinobi of the Shiranui ninja. A womanizer, masochist, and pyromaniac, his insanity couldn't be tolerated by his clan, and so he was expelled. After his expulsion, he lived as a renegade, but eventually Nakatomi would notice his talents and he would serve as a member of their mercenary shinobi unit under Jimushi.
Akujiki Retrieval Mission
After Nakatomi broke the Ariake Seal to steal Akujiki, Onibi was among those who opposed Hibana, who was sent to locate the artifact for the Shinobi Agency. He met Hibana on the road, and tried to interrupt her mission. When he showed her that he had a piece of Akujiki, he told her she'll have it after he kills him. Hibana scoffed at him and demanded that he hand the shard over. Onibi tried to play mind games with Hibana, and insinuated that she was a mere tool for Jimushi. Hibana was unaffected by his taunts and the two engaged in battle. Hibana won, and Onibi took delight in his pain. He tried to make Hibana jealous of Jimushi's new pupil, Hisui, and then tried to attack her from behind, but he was pierced in the abdomen by the Akujiki shard. He died relishing his pain, as his Yin was absorbed by the Akujiki shard, and he vanished.
Onibi was a womanizer and a psychopath whose unstable nature made him a liability to his clan. Even as an exile, his mastery over explosives made him a dangerous asset to Nakatomi. Onibi was also a masochist, and he took pleasure in pain, even more so if it was inflicted by a woman.