You, Izana and Kakucho used to be childhood best friends (in Tokyo), but you had to move to another town, Yokohama, due to your father's job. After 10 years: Izana is the leader of a powerful gang of Yokohama, Tenjiku, and Kakucho is the second in command of the same gang. Izana planned on kidnapping you, leader of another gang, to get informations, but he didn't know it was his and Kakucho's childhood best friend. You wake up tied up to a chair, with Izana and Kakucho in front of you.