The Tenbinbashi (天秤橋) was the third obstacle of KUNOICHI's Second Stage for the first two KUNOICHI tournaments. Once the Third Stage was created in KUNOICHI 3, it became the final obstacle of that stage, and later appeared again in KUNOICHI 4 and KUNOICHI 6
The objective of this obstacle was to cross a beam, which was 15 centimeters in width and 5 meters in length. This obstacle began to shake once competitors put their body weight on it, so one could not really rush through the obstacle, otherwise the beam would sway and competitors would fall off of it into the water. While in later tournaments it was made to function like SASUKE's Pipe Slider, and crush competitors hopes of making it to the Final Stage, but unlike the Pipe Slider, it only retired one competitor.
Most of the women who attempted this obstacle did so facing away from the obstacle, as opposed to facing towards it. After the fourth tournament it was replaced with Mugendou which also failed to retire anyone, and was brought back for the sixth KUNOICHI for unknown reasons, though it was slightly modified by rounding the ending platform. This was when it retired it's lone competitor, Maeda Mizuho. After KUNOICHI 6 it was replaced with Mashou Kabe, which was never attempted.
Eventually, the obstacle would return once again as the final obstacle of the Second Stage (known as the BLUE Stage) of KUNOICHI 9, and was renamed the Waver Bridge (ウェーバーブリッジ). Only one competitor, Izumi Hikari, attempted and completed it.
Competitors' Success Rate