BJ is a relatively unknown blues singer who scraps some bars in Yokohama. He does not earn much with it and to make ends meet he also acts as a private detective.BJ is a relatively unknown blues singer who scraps some bars in Yokohama. He does not earn much with it and to make ends meet he also acts as a private detective.BJ is a relatively unknown blues singer who scraps some bars in Yokohama. He does not earn much with it and to make ends meet he also acts as a private detective.