Born in the prefecture of Saitama, a prefecture close to that of Tokyo, Ryutaro graduated from an art school in the Japanese capital. He enrolls in a pottery school, hoping to find a job where he doesn't have to show himself in public. However, the quality of his work was recognized, and he began to appear in public as a popular artist. It expresses its originality through the way of using clay and cooking methods. The delicacy of his works possesses strength and beauty.