Keibun Ōta (おおた慶文, Ōta Keibun), real name Yoshifumi Ōta (太田慶文, Ōta Yoshifumi), is a painter and illustrator born on November 10, 1951, in Haboro, Hokkaidō Prefecture, Japan. He is best known for his watercolor paintings of young girls and children. Ōta has multiple books in print which collect his works, and he has created illustrations for magazines, books, calendars, and posters, and has had multiple one-man exhibitions. He currently lives in Izu, Shizuoka Prefecture.
Source: “Keibun Ōta”, English Wikipedia (CC BY-SA 4.0), excerpt