CHILD’S DOCUMENTS (ORIGINALS AND COPIES)
1.    Birth registration form JPN.LM01 that is completed;
2.    Confirmation of birth form from the hospital or certification of home birth from the midwife/doctor (original);
3.    Prenatal card (maternity examination book) (original and copy)

PARENTS’ DOCUMENTS (ORIGINALS AND COPIES)

Identity cards or entry permits or passports of the parents and the person reporting the birth (originals and copies);
Death Certificate of mother and father of the child (original and copy if applicable)
Marriage or divorce certificate (originals and copies)
INFORMANT’S DOCUMENT (ORIGINAL AND COPY)

Identity card or entry permit or passport (original and copy)

This is what you need but don't know about original document if father not here.