I'm being played with by a liberal arts wife from a plain and quiet bookstore

Yamada wants to get closer to Yui, the bookstore clerk she admires, so she buys a bunch of books that she doesn't even read. However, it was decided that she would return to her parents' house to find a job, and she was finally separated from Yui... She took me to the back of the store, saying, "I have a book I recommend." As I was reading the erotic novel I was given to her, I was eventually whispering dirty words in my ear and playing with my whole body. Since that day, Yamada hasn't let Yui get her dirty words out of her mind, and heads back to the bookstore where she works...