A group of seemingly ordinary merchants is really a band of assassins for hire. When they discover that all the assassins in Edo are being killed they must act quickly to find the culprit.

The first instalment in a series depicting the exploits of Akira Minami, the shadowy ‘No. 1’ slot machine player who works as a stand-in in the underworld of pachislot. Shimomura, the owner of a pachislot parlour, finds himself saddled with a debt of 700 million yen at a secret pachislot club, but...