, titled "Clash: Part 1" , marks the beginning of the "Succession Contest" arc's descent into a bloody underworld war on the Black Whale [1, 2]. This chapter focuses on the internal power struggle between the three Kakin Mafia families—the Xi-Yu, Cha-R, and Heil-Ly—shifting the spotlight away from the Royal Princes to the organizations that support them [2, 3]. Chapter 390 Summary and Key Events
: The leader of the Heil-Ly family whose nihilistic goals drive the current conflict [2]. , titled "Clash: Part 1" , marks the
: The Heil-Ly family, under their chaotic leader Morena Prudo, has begun a "leveling" game where members gain power by killing others [1, 2]. This chapter shows the Xi-Yu family reacting to the Heil-Ly's indiscriminate violence, which threatens the "rules" of the underworld that keep the ship from falling into total anarchy [3]. : The Heil-Ly family, under their chaotic leader
: Underboss of the Xi-Yu family and the primary protagonist of this chapter [2, 3]. : The Xi-Yu family, led by Underboss Hinrigh
: The Xi-Yu family, led by Underboss Hinrigh Biganduffno, is actively searching for Hisoka on the lower tiers of the ship [1, 3]. Their goal is to find him before the Phantom Troupe or the rival Heil-Ly family does, as Hisoka's presence is a wildcard that could disrupt the balance of power [2].