Silk

The Imomushi silkworms can live only in the cold peaks of the Akaishi Mountains, and they produce the most delicate and expensive silk in the world. Very few people can withstand the hardships of the lonesome life a shepherd of giant silkworms leads. It is a solitary existence that requires great dedication and strength of character to bear the pressures that stem from competing with the few other shepherds who fight over the scarce but desirable feeding grounds, while keeping the fearsome ookamy at bay.