'Do you enjoy being the Black Rider who's been spotted all over Ikebukuro over the past few years now?Why is it that you're riding such a dangerous bike all over the place?Are you aware that you're violating the law?!' Ikebukuro, Tokyo.A place full of fires waiting to be lit and plenty of people ready to light a match: Twins who are the perfect opposite of each other.An idol who's nothing like her older brother. A girl with a crush on her senior in the Dollars. And a headless rider with a bounty on her...uh, head.Keeping the peace is probably not gonna happen.