 The chapter numbers listed below refer to the overall placement within the series.The Viz reprints have used several different renumbering systems; in the second-edition collections, the first chapter of each volume is indexed as "Scroll One", the second chapter is "Scroll Two", and so on, with the numbering reverting to "Scroll One" at the start of each new volume.is a special manga chapter published in "Weekly Shōnen Sunday" in 2013 for Shogakukan's "Hero Comes Back" manga anthology composed of short stories of their retired series, published to raise funds for the recovery of the areas afflicted by the 2011 Tōhoku earthquake and tsunami.