Many Japanese people migrate permanently to Taiwan after first moving there for business, studies, or marriage. For these residents, it can be quite a headache to logically decide the status with which they reside in the country.
There’s the option of abandoning one’s citizenship by birth and being naturalized as a local citizen. Many Japanese also undergo the naturalization process in Taiwan. But there is an impression that it’s difficult. At least to my knowledge, many Japanese people prefer switching from a five-year residential visa to an easier-to-get permanent residency permit.
