 Fukumoto uses his trademark onomatopoeia, , to express the characters' uneasiness.He also uses visual metaphors, like making Kaiji jump a large crevice or drawing him into a rushing torrent of water, to express the uneasy atmosphere.Women rarely appear in the series, being Mikoko Sakazaki the most prominent, and their appearance in gambling scenes are even more rarely, as Fukumoto reportedly stated that he did not need women in the gambling world.