 Fukumoto considered that his antagonists, like Kazutaka Hyōdō and Yukio Tonegawa, are bad guys saying cruel things that maybe are true.By making Kaiji reflecting on his life and noticing his own faults, Fukumoto considered that the story is about maturation, as he wanted to draw a story in which the character gains something or changes in some way, so that he would be able to trust a person, even if he was previously betrayed.