"Sashiko" is a Japanese needlework that was "born in people's lives when cloth was once very valuable. In modern times, the variety of cloths and threads has increased, and design has attracted attention in addition to practicality." (translated from Japanese by Google).
The cut lines for patterns and stitching are printed on the cloth, and are water soluble.
The instructions are in Japanese, but there are excellent pictures to guide you along. (Kind of like Ikea instructions.)