User blog comment:DancePowderer/A Crack in Its Utopian Armor/@comment-13876472-20130808094037/@comment-13876472-20130815141806

Sorry for the late response, but I had missed that. It is clearly stated by Law himself that he joined Doflamingo 10 years before. Maybe he is considered a rookie pirate, but he used to work under him years before he starts his own trip.