Question: Why did Makoto Tezuka's father die?
Sentence (from "Osamu Tezuka"): His legendary output would spawn some of the most influential, successful, and well received manga series including the children mangas "Astro BoyPrincess Knight" and "Kimba the White Lion", and the adult oriented series "Black JackPhoenix", and "Buddha", all of which won several awards.
Relevant evidence: No