With the development of more commercialized snacks in Japan in the late 1960s, a watermelon farmer wanted to counter this new competition by adding a specialty item to his standard product line. With careful development, the cube shaped watermelon entered the Japanese retail market in the late 1970s.

Japan has a unique square watermelon from the innovation of Japanese farmers which has a high price. But the unique watermelon cannot be eaten because it has a bland taste.