I'm A Flame Fox, Tochiongar Seven!!

Tochiongar Seven rescues his childhood friend Mitchie Yamakoshi from the Snake King Clan, who have been resurrected in the present day. But Kotaro isn't ready to fight. Convinced by their father, Dr. Yamakoshi's research, Mitchie Yamakoshi and his sister Jun decide to investigate the Snake King Clan on their own. Then the two of them are confronted by their father, Dr. Yamakoshi, who was supposed to have disappeared, but...