R rides the train home with the rain outside. Being one of the few passengers on bored he spots a familiar face and has a chat to pass the time. He might even help solve a problem.
R loves his part time job. It allows him to learn useful skills and to meet a range of people. When the rain outside becomes to much a blond girl takes shelter making a good opportunity to get to know them
Waiting for the rain to stop, there is nothing more boring... That is unless you happen to be sharing the same piece of cover with someone... And having a conversation doesn't hurt.
There is rumored to be a ghost in the Royal Library. As Twilight Sparkle studies her mined wonders to the rumor. Celestia appears to enlighten her student on the origins of this ghost, and a little about her own past.