The first 3 Boogiepop light novels are widely available right now in an omnibus collection for like 20 bucks. If you have any interest in the series at all, I highly recommend reading them in lieu of the anime. HOW TO READ/WATCH BOOGIEPOP IN ORDER: https://www.youtube.com/watch?v=h0g7C14bqJc
BUY THE BOOK: https://amzn.to/2SzxhC5