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?! Japan is in chaos after guns are distributed to the public. While Sakamoto and his crew scramble frantically to restore peace, a member of the Order secretly plans to take Sakamoto down, despite the allegiance between the new JAA and X.