Japanese joint called "Kawai tsugite" model 3

This Japanese joint called "Kawai tsugite" invented by Japanese professor when he was in Tokyo university.
It is not popular Japanese joint and wanted to share to woodworker all over the world by Instagram. Me and Tais he is master cabinet maker from Denmark found the way of this joint so we tried while we have joinery workshop at Capellagarden.
by @shino_bunny (Instagram)