The Haso Tobi (八艘跳) is a First Stage obstacle introduced in KUNOICHI 3. The obstacle was a replacement for the Sarentobi and ended up being more of a threat than it's successor; however this was largely due to the fact more people attempted the obstacle. The obstacle was in every tournament from KUNOICHI 3 to KUNOICHI 7, except for KUNOICHI 6 which was revised for the international competitors.
KUNOICHI 3 Version
The first version of Haso Tobi was the sixth obstacle of the first stage. The competitor had to leap from a trampoline onto a small, rounded, yellow island. Afterwards the competitor had to use their momentum to jump back onto the platform. This was by far the easiest version of the obstacle and many who cleared it used only one foot to land on it, as opposed to landing on the entire island. Those who failed the obstacle, failed due to landing wrong, or tried to skip the yellow island altogether. This version only lasted one tournament.
KUNOICHI 4-KUNOICHI 5 Version
The second incarnation of Haso Tobi remained the same as it's successor; however it lacked the small yellow post, which helped many competitors pass it the previous tournament. This version proved to be much more dangerous, and stopped several competitors from clearing the stage that had done so in previous tournaments. This version lasted two tournaments, and was removed after KUNOICHI 5 in order to make the course slightly easier in hopes of more clears, especially for the new international contestants.
KUNOICHI 7 Version
The third and final version of Haso Tobi was the most dangerous. It was composed of a trampoline that competitors had to jump on and then land on a giant, tall, yellow island, about a meter high. This version was the most tricky, because unlike previous incarnations, this version was only passed when competitors did not use the trampoline. The four people that cleared this version, all used one foot and landed it on the edge of the trampoline, as opposed to using both feet on the cross center of the trampoline. Despite it's failure rate, it only lasted one tournament due to the format redesign in KUNOICHI 8.
Competitors' Success Rate