Josui Sôen was a Zen monk and painter from Engaku-ji in Kamakura who studied directed under Sesshû.
After studying under Sesshû for three years in Suô province, Sôen was gifted a "splashed ink" (hatsuboku) landscape painting as a farewell present. That landscape painting, now held by the Tokyo National Museum, is today considered a National Treasure and is among the most famous Japanese paintings of all time.
References
- Gallery labels, "Splashed Ink Landscape," Metropolitan Museum.[1]