KBC 2023| Which of these is not a Japanese island? KBC 2023, Check the answer to the question- Which of these is not a Japanese island? By Himani Budakoti - October 27, 2023 KBC 2023, The options of the question – Which of these is not a Japanese island? A. Okinawa B. Shikoku C. Kyushu D. Fiji The answer is D. Fiji.