Sengai

Sengai Gibon was a Japanese monk of the Rinzai school. He was known for his controversial teachings and writings, as well as for his lighthearted sumi-e paintings. After spending half of his life in Nagata near Yokohama, he secluded himself in Shōfuku-ji in Fukuoka, the first Zen temple in Japan, where he spent the rest of his life.
Though the Rinzai sect is particularly known for its hard-to-understand teachings, Sengai tried to make them accessible to the public.