Akihisa Shiono

Taro Sakamoto, a hitman said to be "the strongest in history", fell in love one day and retired from his career as a hitman! After getting married and having a daughter, Sakamoto became the manager of a small convenience store and became so fat that he was now a shadow of his former self! One day, a 1 billion yen bounty was placed on his head, and assassins all over the world flocked to him.

As each group pursues their mission, a fierce battle unfolds over the tattooed prisoners. Who is friend, and who is foe? The fight leads them all to Abashiri Prison, where Noppera-bo, the man who holds all the answers, is locked away...