Nadeshiko has just moved here and does not remember her new phone number. Also, she left her mobile phone at home by accident.
She does remember her sister's number, and borrows Rin's phone for a rescue call.
Before she leaves, she gives Rin her number.
Nadeshiko has caught the camping bug, so she seeks out the Outdoor Activities Club. There she meets Aoi Inuyama and Chiaki Oogaki.
Now is the winter of our discount tent.
That is, they have a super cheap tent and try to set it up in the courtyard. One of the poles breaks.