Arata has a part-time job in the "Katsugi bookstore" in front of the station. This bookstore appeared in Episode 11, 7 minutes 34 seconds. Volume 4 page 6 in the comics.
Arata thought customers, ... But it was a cat. This store doesn't get many customers.
Now, this store has become Chihayafuru gallery. Until the June 12, 2016. Let's visit soon.