Nonaka Yoshimi

Nonaka Yoshimi is an aerobics instructor who competed in SASUKE 9. He became infamous for removing his clothes for showing a pink thong (just like Gokū). He cleared the Rolling Maruta in a very particular way, by hanging with only his hands with the log rolling in a zig-zag way instead of a 360° degree. However he went out on the very next obstacle, the Odama, being unable to land on the platform after the jump on the boulder.

Unfortunately he lost his pink thong in the water

a similar thing happened to Akira 100 percent in SASUKE 35 when he let go of his pan