In Like a Dragon: Infinite Wealth, upon arrival in Hawaii in Chapter 3, the game introduces the return of the Poundmates service, the special summon system previously introduced in Yakuza: Like a Dragon. This feature allows Kasuga, and Kiryu, when head of the party, to summon characters they've befriended to assist in battles. These special summons are unlocked by completing Substories as Kasuga and Kiryu’s Memoirs of a Dragon.