What are washi and writing tools?

Washi is papers made from fibers of the plants, such as Kozo (Mulberry), Mitsumata (Edgeworthia papyrifera), and Ganpi (Diplomorpha sikokiana), in Japan since ancient times. Washi has a rough texture and excellent durability and resistance. Traditional writing and calculating tools, such as brushes, Sumi ink, and Suzuri inkstones, and Soroban abacuses have been essential for the lives of people and culture in Japan since old times. These tools have been passed down until now.