I don't think that databook is consider as manga. It will be better if we put info from databook in the "Trivia" and in manga debut - only "Chapter 144"—This unsigned comment was made by Mutant 16 (talk • contribs) on October 10, 2009.
Yeah, that screws up having manga chapters in there. Simant (talk) 06:25, January 15, 2010 (UTC)
So, does that mean it should be changed? It does seem more reasonable to have:
manga debut = chapter 238
trivia = actual first appearance is in the first databook