In a small village on the cliff edge in upstream of Niyodo-River, the proud Osaki family has been preserving the tradition of Tosa Washi. They are also farming Kozo by themselves to serve high quality and responsible paper. Everything is remaining the same as 100 years ago, like Kozo farm, Steaming Barrel, Field Rinsing Pool, Sun Drying and so on. It is very rare to make large size O-ban (大判=183×63) by one person, and a high skill is required. Their paper is definitely historic original, indispensable for various Japanese culture.