Yankumi's students finally enter their graduation. But before that happens, the students prepare for a trip, having to be very cautious that they don't get into trouble or the students may be expelled and Yakumi may be fired. Yankumi, Kawashima and Shizuka also go on a trip. Turns out that the students and Yankumi went to the same onsen.

Yamaguchi reunites with her students after the end of season 2.

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