Nakajima is an island that has long been famous for producing high-quality citrus fruits. The excellent drainage provided by the terraced fields, the mineral-rich sea breeze, and the reflected light from the Seto Inland Sea allow delicious citrus fruits to grow. It is such a mecca for citrus cultivation that it is said that "there is no citrus fruit that cannot be grown on this island."

Among them, the "Takumi to Kiwami" series is a pride and joy of the island, made by carefully selecting fruits grown by "masters" of mandarin orange making, and selecting them with a taste sensor that guarantees a high sugar content. "Takumi to Kiwami" has a good appearance and a sugar content of over 13 degrees. It has a strong sweetness and a rich taste. "Setoka" is also known as the fatty tuna of the citrus world, and has a melting texture and a rich, juicy taste that can be peeled off by hand.