She was shocked when he handed her a rectangle shape with a gift wrap and told her to open it. And to her surprise, it's one of her favorite author's set of books with a sign of the author itself. She was really happy because that costs too much-- too much for someone to do such kind of effort. So she can't help herself and gave him a peck on his cheek and say "thank you". That made his heart flipped and made his face a crimson. Because he didn't expect that she would do it. And she was just beyond happy to seem to care what she did. And when she saw his face like that, she laughed at him and hugged him too.