Mangas

オメルタ~胡蝶ノ夢ノ果テ~ -  Omerta - The End of Butterfly's Dream
The city of Tokyo is split between two mafia groups: The Dragon Head and The King Caesar organization. Due to a certain incident, the protagonist JJ, a well-known professional assassin, is framed and thus abandons his title, going into hiding — but more problems come his way.