Are there any restrictions on leave for junior college students?

If there are special circumstances, you can take a long leave.

In vocational colleges, if students have special circumstances in their class, such as being unwell and needing surgery to recuperate, etc., they can submit a certificate of suspension of study to the school. As long as the suspension is approved by the school, the suspension can be granted. During the long vacation, of course, after taking a break from school, you still have to go back to school to make up for the missed courses.