第 25 集: 六組面臨障礙賽道，透過逐步淘汰爭取U4 Fes入場資格。

25

Like the preliminaries, the six units are subject to an obstacle course to qualify for U4 Fes. The girls are gradually eliminated on various obstacles: Merm4id steps on trap tiles that drop them; Rondo falls off a ledge after Hiiro accidentally lets go of Nagisa's hand; Photon Maiden, Yuka, and Esora incorrectly answer a quiz and are sent into a swamp pit; Shinobu and Muni trip while the walls are closing on them and Rei and Maho are unable to stop them. Rinku and Kyoko escape, but the latter's shirt is caught between the walls and she is eliminated. (Source: Wikipedia)