It was a way of tying an obi in the length of ichi-jo ni-shaku (about 3.64m) into an one-sided knot; and the style of hanging the obi longer with this knot still in place was called by a different name, 'mizuki musubi', in association with Tatsunosuke MIZUKI who was an actor of female roles during the Genroku era.
一丈二尺の帯を後ろで片わな（片結び）に結ぶもので、この結び方のまま帯をより長く垂らしたものは元禄時代の女形水木辰之介にちなんで別に「水木結び」と呼ぶこともある。