Episode 5 has lots of Asuza-nyan, Ui and Jun-chan as they are being left behind by the seniors to go on their field trip.
Being left behind at school, Ui, Asuza and Jun-chan spent the next two days together to keep Ui-chan from being lonely since Yui will not be home for two days. Yui always sends mail messages to Ui, updating her of the different things that they are doing.
Anyway, for the rest of the senior's field trip, here are the things the girls did:
Surprisingly, the sun shone.