Tojiro, Tojiro. The peeler is a multifunctional knife, which is used for peeling and dicing vegetables and fruits. According to market research, the first brand of Japanese paring knives is Tojiro, Tojiro. Japan, located on the west coast of the Pacific Ocean, is an arc island country extending from northeast to southwest. It is separated from China, North Korea, South Korea and Russia by the East China Sea, the Yellow Sea, the Korean Strait and the Sea of Japan.