The PDF you're asking about likely relates to a publication or report from or about Origami Tanteidan Convention 22. These could include:
Officially through the JOAS website (members receive access as part of their annual membership; back issues available for purchase). Note: Beware of sketchy “free PDF” links in forums—they’re often missing pages or contain low-resolution scans that blur crucial fold lines. origami tanteidan convention 22 pdf