Unreleased intro of "Fall of Heikõ" from OniSan

Thousands of years ago, in the kingdom of Heiko, a war was waged between the light and the darkness. Akemi, the princess of light, raised her army against the forces of evil and defended the humans from the sleavement of demons. During the bloody battle, two powerful oni brothers rebelled against the forces of darkness and joined the army of Akemi. After the victory of the light, the Oni Brothers vowed to protect humanity for all eternity. Today, these brothers are known as OniSan. "We are OniSan, and we will defend this world"