Trivia: When Hiro buys the comic book, he pays with a 1000 yen note, which is a typical price for manga in Japan. This translates into approximately $8.48 American. As a typical 2006 newsstand price for comics is about $2.99, the vendor actually got more than his money's worth.
Trivia: The title "Seven Minutes to Midnight" refers to the Doomsday Clock that the Bulletin of Atomic Scientists prints to represent the global nuclear threat. The clock was originally started at seven minutes to midnight when it was introduced during the Cold War and it was also seven minutes to midnight when this episode of Heroes aired.