Article 20-2Special Provisions for Changes to the Status of Residence Pertaining to the Status of Residence of "Specified Skilled Worker"
第二十条の二(特定技能の在留資格に係る在留資格の変更の特則)
In the case of applying for a change to the status of residence of "Specified Skilled Worker" pursuant to the provisions of Article 20, paragraph (2) of the Act (limited to those pertaining to item (i) of the right-hand column corresponding to "Specified Skilled Worker" of Appended Table I (2) of the Act; the same applies in this Article and Article 21-2), in which the applicant has previously resided in Japan with the same status of residence, if the period of stay with the status of residence (excluding any period during which the applicant was unable to engage in work due to pregnancy, childbirth, childcare or any other unavoidable circumstances) has reached a cumulative total of five years (six years if there are reasonable grounds for staying for more than five years with the status of residence), the reasonable grounds under Article 20, paragraph (3) of the Act is considered not to exist.
Read this with the articles around it