by camk4evr » Tue Jul 18, 2006 12:09 pm
I don't believe they ever say in the original anime but in the americaized version they say 1000 years ago.
In the Mixx/Tokyopop translation of the manga they say, in an 'aside' that it occurred 10,000 years ago. Unfortunately I don't remember which charater said it nor do I remember the page and vol. number. What I do know is that Ami said it occurred in 'ancient times' in an earlier chapter.