Nagi is Kamiki Village's legendary hero of the past and the ancestor of Susano. 100 years ago he was the one that killed the Orochi along side Shiranui and sealed it in his great sword Tsukuyomi, thus freeing Nippon from evil. He is also the partner of Nami and it was she that inspired him to kill the Orochi.
Susano is angry of his ancestry as everyone expects him to be noble and brave like Nagi, they expect him to follow in his footsteps and go out to slay lots of monsters. However when Amaterasu travels back through the Spirit Gate we find out that Susano is in fact very much like Nagi.
 Battling Nagi
As everyone thinks that Shiranui is the familiar of the Orochi they are afraid of her. When Nagi sees her he fights her to try and scare her away. After Shiranui wins the fight she must dress Nagi up in the sacrificial robes and bring him to Moon Cave to face his destiny.
Nagi is quite an easy opponent, only having two attacks, a sword firing attack and a sword slashing attack. He will fire five swords at Shiranui which she can either dodge or deflect back at him to stun him. You should attack him with your Divine Instrument whenever you have the chance.
 Bestiary Entry
"This legendary hero, with Shiranui, defeated Orochi 100 years ago. His style was to act cowardly to fool his opponent, then strike. He epitomizes the saying "A smart falcon hides it claws from view."
 Based On
Nagi is based on the Japanese Deity, Izanagi. Izanagi's wife and younger sister was Izanami-no-Mikoto, the deity who Nami in Okami's origins come from, Nami being Nagi's love interest in the game. It is said that Izanagi and Izanami-no-Mikoto created many Japanese Islands, Gods and forefathers. After Izanami-no-Mikoto dies in childbirth, Izanagi goes to underworld to try and revive her however when this fails he creates the deities Amaterasu, Tsukuyomi and Susano-o from his left eye, right eye and nose respectively.
Nagi reappears in Okamiden when Chibiterasu and Kurou follow Akuro back to 100 years in the past to stop him bathing in the blood of the True Orochi. He carries a mortally wounded Shiranui back to Kamiki Village for him to die.
- Nagi is the only cross dressing character in the game as he is dressed up in Nami's sacrificial robe.
- Nagi's armour similar to the God's Divine Markings (White with red designs).
- Nagi is immune to most Brush Techniques, therefore he can only be killed using your Weapons. The only exception is that Thief's Glove still works.
- He refers to his sword as Bokunenjin instead of Tsukuyomi.