score:3
Since you're going for a summer internship, I'm assuming you're in college and thus above 18. You don't need a consent letter if you aren't a minor.
Coming to documents required, according to the Ministry of Foreign Affairs and Visa Requirements for Indians- Ministry of Foreign Affairs , you need
2.Original Schedule of Stay(Itinerary) signed by the person/company that invited you
3.Certificate of guarantee from company/University if they are covering your expenses
4.An overview of company/organization that is inviting you
6."Confirmation slip, certificate, or other documents to prove reservation of air or ship boarding ticket".
8.Documents to prove ability to pay for travel expenses
Furthermore according to Japan Embassy in India, you need
If you don't have a guarantor in Japan and are either self-funded or funded by a national/state scholarship, you need to submit bank details/tax returns of the individual who is funding you and/or the details of the scholarship that will be covering your expenses
Edit: I forgot to mention that you also need an NOC(No-Objection Letter) from your institute/university
Upvote:0
I think a consent letter is required even if you are an adult because they have an option for consent from parents/spouse. If age was a factor they would not have mentioned spouse because only adults can be legally married to get consent from their spouse. And also one of my cousins who is married had to submit his spouse's consent to travel to Japan.