|Debut||Ninja Gaiden II|
Mount Fuji is a sacred mountain in Japan. At its base lies the Hayabusa Village, home of the Hayabusa clan and Ryu and Jo Hayabusa. Underneath the mountain lies the Underworld, home of the Fiends. It was there that the Archfiend Vazdah was sealed away.
Ninja Gaiden Sigma 2Edit
After defeating Elizébet, the queen of the Greater Fiends, Ryu learns from Genshin that Vazdah was sealed away beneath Mount Fuji. Ryu races back to his home and must hurry to the base of the mountain to stop Vazdah from being resurrected. Once there, Ryu defeats Genshin and heads below the mountain to stop Dagra Dai.