The Origami Tanteidan Convention 22 PDF is significant for several reasons:

The annual convention (usually held in Tokyo) features:

by Ekaterina Lukasheva : A geometric masterpiece showcasing mathematical precision. Where to Find the Book

will likely never get an official PDF release because:

A solid report from the convention might cover the events, notable models, guest speakers, and overall atmosphere of the convention. It could serve as a record of what happened during the convention and what was learned.

If you are a casual browser, stick to Tanteidan Magazine Volume 100+ for similar complexity without the legal headache.

featuring 62 distinct models ranging from intermediate to "super-complex". Highlights from Volume 22