the two of them were in the port mafia for 7 years they were called double black, the most feared duo in all of Yokohama but something happened that changed everything and Dazai left the mafia and Chuuya was alone again while dazai was in a different organization but even though they were separated, they couldn’t stop thinking about each other so when their organizations had to work together, they saw each other for the first time in seven years. How will it go for them will they be able to work together like they did at seven years ago?