User blog comment:OnePieceNation/F*** Togashi and his gender ambiguous characters./@comment-4828844-20150523043501/@comment-25506276-20150525164305

Even if someone hasn't seen singular they before, the meaning can be quickly derived from context, and it properly represents the ambiguity of gender. And it's not like singular they is unheard of, it has seen widespread historical and contemporary usage.

Japanese wikis avoid using pronouns towards Pitou (because the Japanese language is cool like that), and neutral pronouns are used in informal situations (as well as in the manga). On that note, I'd again repeat the suggestion that the article here be rewritten to avoid pronouns when possible and use "he or she" when absolutely needed.

And it seems you missed the point on the databook. It does use "kare" with Pitou, once, but the manga never does this. And considering the manga has retconned information from the databook (the zeno-maha thing), the single anomalous use of "kare" in the databook hasn't shaped up to be of any significance. If it was, the manga surely would've used kare as well. The Japanese wikis must know this as they don't use the kare pronoun either, so this wiki using "he" would be foolish (and needlessly confusing).

[Another thing, the databook as a whole isn't necessarily inaccurate, but Togashi is always liable to disregard it. Information like Zeno's father and Pitou's pronouns has been contradicted with later manga releases, so until a similar thing happens for the Zoldycks' nen, it's still safe to label them as manipulators like the databook does]

The pic you attached doesn't seem to hold any relevant info, though it'd be nice for a higher res scan.