Maburaho - Season 1 Episode 16 We Snooped...
Overview: Kuriko has been absent from several student council meetings. Elizabeth asks Rin, Yuna, and Kazuki to track her down. After following her, they discover she is on a date with a strange man who is up to no good. But it was revealed that the man was a criminal wanted for cheating money of women, and Kuriko is helping the police in getting the evidence to arrest him. Rin, Yuna, and Kazuki, due to misunderstanding, almost messed her up, which Kuriko was quite infuriated about.