Baka and Test: Summon the Beasts

Me, Peeping, and the Training Camp! (2x5)

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Blackmailed by an unknown assailant, Akihisa and Yūji decide to find the culprit among the girls with the help of Kōta and Hideyoshi, their only clue being that of a burn left by culprit's mother's punishment. Before the group could continue further, a group of girls arrive in their room and say THEY installed a micro videocam in the girls' changing room...