The Cartel Arc is the sixth story arc of the Hakata Tonkotsu Ramens series. It focuses on various drug and weapons-dealing organizations vying for position in the gap left by the fallen Shou Wang; conflict between Xianming Lin and Zenji Banba and jobs that put them on opposing sides of the underground war; a Mexican drug cartel seeking new business in Fukuoka's port; and Ricardo Seiya Ortega, an undercover agent with a strong grudge against José Martínez.