User blog comment:Haneoka/Those random background characters in the VOCALOID China PVS./@comment-35301431-20140722203405/@comment-35301431-20140723021303

It would be called 'a cameo', or at least an 'in joke' by the staff since they animated both the BL and Vocaloid China.

I should of added this to the article a long time ago.