Befitting of the Port Mafia's higher ranks, Hirotsu's a ruthless and dangerous individual, and won't hesitate to kill in order to further their gains. He isn't above mocking others before killing them, sometimes with a smile. His experience in the Port Mafia leaves him seasoned in its expectations of him and others, and expects diligence and promptness out of his subordinates. He has no qualms threatening their lives to keep them in line, especially when it comes to Gin and Tachihara's quarrels.