While Taiwan Sign Language does not have a fingerspelling system, Chinese Sign Language, Korean Sign Language, and Japanese Sign Language (JSL) have their own fingerspelling systems. In many countries, fingerspelling follows the writing system of the country. When we talk about fingerspelling in Asian countries, then, we should take this into consideration. Some Asian countries have their own original and non-Roman-alphabetical writing systems while most European American countries use alphabetical writing systems. This situation has a large impact on fingerspelling systems. Japan is a typical case, and for this reason, this article uses JSL as a central example.