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 is taken to the back of her shop by her girlfriend who tells her, ``I have a book that you recommend.'' While reading the erotic novel that she gave him, she ends up whispering lewd words into her ear and having her whole body played with. Since that day, Yui