Yamada buys books he doesn't even read in order to get closer to Yui, a bookstore employee he admires. However, when she gets a job and decides to return to her parents' home, he is finally separated from Yui... She takes me to the back of her store and says, ``I have a book that you recommend.'' While reading the erotic novel that she gave him, he ends up whispering lewd words in her ear and playing with her whole body. Since that day, Yui