Kill some time with former hit man Taro Sakamoto! Taro Sakamoto was once a legendary hit man considered the greatest of all time. Bad guys feared him! Assassins revered him! But then one day he quit, got married, and had a baby. He's now living the quiet life as the owner of a neighborhood store, but how long can Sakamoto enjoy his days of retirement before his past catches up to him?! Sakamoto arrives just in the nick of time to save Shin! Leaving his family and comrades' protection to Shin, Sakamoto confronts the New JAA, but his body won't move how he wants due to extreme trauma! Faced with the relentless onslaught of the New JAA's assassins, what fate awaits Sakamoto?.