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?!

In the third stage of the JCC transfer test, the participants are divided into multiple teams for a deadly game of "tail tag." Three applicants, who have skipped the opening stages of the exam because of special endorsements from seasoned assassins, cause a stir with their disturbing styles. Meanwhile, Shin is determined to show Mr. Sakamoto--who just so happens to be an opponent in this round--that he's made progress!