Ep. 4: Miyuki, Natsumi, Yoriko, and Aoi catch an underwear thief while teaching swimming

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The group consisting of Miyuki, Natsumi, Yoriko, and Aoi engages in a dual activity at the local gymnasium. While conducting swimming lessons, they intervene to stop a woman who is stealing underwear. This incident occurs simultaneously with their instructional duties, combining their efforts to address the theft within the context of their scheduled swim class activities.