I wanted to name this Chakin Shibori, but that would get too confusing ☹️.
How glenn taught me to do this, which is how I do it now in the mizuya as well as during Sou Kazari and Irekodate:
- Take the L outer corner and the R inner corner after flipping the chakin onto your hand, then stretch out to hold across the diagonal.
- Bringing the corners out and away from you (so the body falls into you), make a triangle with the flat base pointing away from you. Points are primarily held with R.
- While you’re creating that triangle, fold the excess flap (which will be on your R) into the triangle with L. This should be a fluid motion.
- Fold the points of the triangle up, like how we usually do (make the triangle, fold up) so there are bunny ears sticking out.
- With R, take the underside of the chakin and pinch to organically fold it in half. From there, shibori with both hands on the underside.
- Unfold slightly after shibori, then give to L (pinching between index and middle finger) and take the bunny ears with L and R.
This versus Tatami-kae
In this, you take opposite corners such that when you open the chakin, you get two overlapping triangles. With Tatami-kae, you take matching corners such that you open up into a rectangle.
Also, flipping orientation is different. Just watch the videos for that one.