Yasuko Chiba is a Cheerleader and Muscle Musical Member who competed in KUNOICHI and VIKING.
In KUNOICHI 4, she did well getting all the way to the Samenso before finally failing.
In VIKING 2, she did great until she lost grip on the Castaway. In the next tournament, she went further, cleared both new obstacles Alphabet Parley and Island Escape, but went out at Cannonball.