Bassui Tokushō (1327–1387) was a Rinzai Zen Master born in modern-day Kanagawa Prefecture who had trained with Sōtō, Rinzai and Ch'an masters of his time. Bassui was unhappy with the state of Zen practice in Japan during his time, so he set out in life with the mission of revitalizing it. The problems he saw were really two sides of the same coin. That is, he saw both too much attachment by some monks and masters to ritual and dogma as well as too much attachment by some monks and masters to freedom and informality.
