https://www.tuj.ac.jp/sites/japan/files/tuj-international-student-handbook-summer-2022.pdf
The application form for a Certificate of Eligibility for a student visa and explanation of the other required documents are available online: https://www.tuj.ac.jp/ug/visa/apply/process-and-documents.html You must adhere to the visa application deadline for the semester that you intend to return to TUJ.