Believe in Yourself

Jibun o Shinjite (自分を信じて)

The Hanamiya girls head to the Chiba Spring Climbing Championships where the goal is to solve the problems of the assembled rock climbing sets. Most of the club members manage to pass through the first round while Konomi gets some advice from another girl who speaks in cat puns. However, the advice turns out to be malicious, as Konomi quickly uses up her energy and fails to clear the first stage. 

The girl is revealed to be Akane Uchimura, the "novice killer," who feels the need to drive new girls out of the sport due to a petty grudge she has against Jun from years prior. Jun gives Konomi some good advice on climbing technique, and Konomi uses it to surpass Akane on the second stage, but her lack of physical strength causes her to fail at the end. The other three members from Hanamiya do well enough that the club wins the tournament.