Â· just now. Report Abuse. The manga, for one thing, only ends up being like 100 or so chapters long and having only 20 or so volumes, plus the characters end up moving around so much it would VERY difficult to split it up into separate story arcs.Devin Â· 2 years ago. just now. Report Abuse. The manga, for one thing, only ends up being like 100 or so chapters long and having only 20 or so volumes, plus the characters end up moving around so much it would VERY difficult to split it up into separate story arcs.