When creating Kanai Ward, Kazutaka Kodaka originally considered giving it an original language, but dropped the idea when he realized it would be too "fantastical". Instead, he incorporated multiple languages (such as Russian, Hindi, Japanese and English, as well as other multi-nationalistic elements) on the signboards around town. This inspired him to make the various character names multinational as well, assigning names in a way that the characters would fit them. At the same time, however, Kodaka avoided using typical names for the cast, instead opting for more unusual names such as "Hellsmile" and "Nightmare": words that are commonly heard, but not as names given to somebody. He specifically went for names that were unique but easy to remember.

In regards to the character Makoto Kagutsuchi, who has a normal sounding name despite his unique design, Kodaka stated: