Changing from Working Holiday to Student Visa in Japan – Do I Need a CoE?

Hi everyone!

I’m currently on a Working Holiday Visa (German nationality) and planning to apply to national universities in Japan to start studying in April.

If I get accepted shortly before the semester begins and my Working Holiday status is about to expire, I’d like to apply for a “Change of Status of Residence” to a Student Visa without leaving Japan.

However, I’ve come across conflicting information about whether a Certificate of Eligibility (CoE) is required. Some sources say it’s not needed if you’re applying from inside Japan, while others say the university still needs to apply for one even in that case.

So my question is: Do I need a CoE when changing from Working Holiday to Student Visa from within Japan? Or can I just apply at the immigration office with my Letter of Acceptance, financial documents, etc.?

If a CoE is required, I’m worried it might take too long and cause issues with the timing of enrollment.

Has anyone gone through this process or has any experience with this type of visa change?

Thanks so much in advance!