The Sakamoto Days manga series was recently announced for an anime adaptation to be produced by T.M.S. Entertainment, and a debut trailer followed right after. The announcement simply indicates that the anime world may just be about to witness the birth of another remarkable franchise. Ranking among the top 10 best-selling manga to have premiered this decade, Sakamoto Days follows the life of Taro Sakamoto, who once upon a time was the ultimate assassin and the greatest hitman. He was so infamous that he attracted the hatred and awe of many of his colleagues.