The USA Today newspaper's latest list of the top 150 bestselling books has just one manga title. Over the seven days from September 15 to September 21, volume 31 of Masashi Kishimoto's Naruto (Viz Media) fell from #34 to #44. Two weeks earlier, this volume had the best-ever debut for a manga. Matsuri Hino's Vampire Knight (Viz Media) volume 4 dropped from #133 off the chart. Volume 19 of Ken Akamatsu's Negima (Del Rey) also slipped off the chart from its debut #142 position the previous week.