If you want an English tutorial, search for "hishi karada" (the name of this tie).
(3) Pass it under the crotch and behind the neck's rope(2) Make some knots in the appropiate places(4) Take the rope left and right(1) Hang a 7m rope on the neckPass and pullBut someone might realize if you wear tight clothes...
Well, maybe that kind of thrill is good, isn't it?!With this nobody will realize you have a rope tied through your body even if you go outside