Okami is a game about a god's return as Okami. This god is know as Amaterasu. In the game you gain your abilitys back known as the Celestial Bursh Techniques. With his powers back you'll fight Orochi with the help of Susano a decendent of Nagi. Nagi is a warrior who helped you kill Orochi 100 years prior to the games beginning. Once you kill Orochi with the help of Susano the real story starts and you have to kill the lord of darkness.