But... But I thought there were many magicians on Earth already! Since the only requirement was for males to keep their chastity until 30th birthday... Some even reached the title of Sage already.
Is the 1 billion yen before or after taxes? In my country, even if you win 1 billion you can end up with only 300 million if you take the lump sum. And 300 million yen is decent, but not ultra-rich by any means. That doesn't even put you in the top 1%.