“I love you,” he says. “I love you too, but…” thinks Mei, the store manager who works at her family-owned bookstore. She begins to go out with her handsome regular customer, aka “Mr. Reference,” and lives a sweet, happy life with her kind new boyfriend. However, she felt unsatisfied with her overly gentle boyfriend in bed. One day while she’s worrying about her envious dilemma, Mei discovers a big secret that he could never tell her! Not only his kindness, but the hidden mischievous side of him makes her body so hot it makes her go crazy!