Class attendance and grades are important for international students.

Foreign nationals residing in Japan with the status of residence of "Student" will be granted permission to engage in activity other than that permitted under the status of residence previously granted upon application, allowing them to work part-time for up to 28 hours per week.
However, since the status of residence of "Student" is for receiving education at the school where you are studying abroad, you may not be allowed to renew your status of residence if you have poor class attendance or poor grades.
It is not accepted as a reason because I was busy with a part-time job, so please be careful.