The BuruBuru paper model is now available at itch.io. The kit includes an info sheet (featuring this lovely 1980s style cover), the mecha parts, and a set of optional decals which you can use to customize your ride. You’ll need to print the parts on heavy cardstock (180g or thicker) and the decals on label paper.
The kit is also available at DriveThruRPG and Sellfy if you’d rather get it from either of those places. Or, you could find me at a comics convention in Korea and get one from me there. The Haiho model kit will follow shortly.