You can get in contact with the institution calling the following number +90-212-317-4600 or visit the Consulate at Tekfen Tower 10F, Buyukdere Caddesi No.209, 4. Levent 34394, Turkey yourself. If you want to omit the visit to the Embassy, simply apply for a Japan e-Visa online. Fill the application form within minutes from home.
Visa to JapanJapan Electronic Travel Authorization