Can Japanese family visas be changed to specific skills?

Of course. According to the inquiry of Japan Immigration Bureau in official website, in order to attract foreign population, the Japanese government started to open 14 kinds of on-the-job visas from April 20/9. Among them, the specific skills visa No.2 is aimed at family visas, which can only be converted into such visas after passing the examination. After the conversion, you can bring your family with you and be eligible to apply for permanent residence.