"Tezuka (1928–1989) was a frail child with a limp who spent his spare time drawing insects. By high school he had seen several doctors, most notably one who treated drawing-related arm injuries. Ironically, he chose to study medicine because of the physically and financially straining prospect of being a cartoonist, but he continued to draw throughout his years at Osaka University Medical School. His first book of manga (Japanese for comics), which he published in 1947 at the age of 19, sold 400 000 copies."