Claim: Luck Stealer, a Japanese fantasy adventure manga, includes supporting characters like current mafia assassin Nakato.
Evidence: Luck Stealer (ラック スティーラー) is a Japanese fantasy adventure shōnen manga series written and drawn by Hajime Kazu. Nakato: A former assassin himself for the mob, he is now the manager of the Flamingo bar, and a small group of hitmen. 
Nakato: A former assassin himself for the mob, he is now the manager of the Flamingo bar, and a small group of hitmen. Adventure, fantasy Jump Square Jump Square (Japanese: ジャンプスクエア, Hepburn: Janpu Sukuea, romanized as Jump SQ) is a Japanese monthly shōnen manga magazine.