While the protagonist of Yakuza: Like a Dragon, Ichiban Kasuga, is commonly stated to have debuted in the 2018 game Ryu Ga Gotoku Online, he actually was first revealed in a trailer for the game Fist of the North Star: Lost Paradise, which is considered a spin-off of the Yakuza/Like a Dragon franchise. This trailer aired almost a year before Ryu Ga Gotoku Online and is notable as Ichiban does not appear in Fist of the North Star: Lost Paradise.