"Nail Biting," written by Go Dae-yeong and illustrated by Kim Myeong-jin. This is the third picture book to feature Jiwon and Byeongkwan, who first greeted young readers in "Riding the Subway" and returned in "Please Give Me Allowance." Children will feel a strong connection to Jiwon and Byeongkwan, whose everyday lives closely mirror their own, and will find themselves rooting for them. This picture book tells the story behind soft-hearted Jiwon's habit of biting her nails, and how her copycat friend Byeongkwan gets caught up in it too. Read this together with children who have their own little habits, whether it's nail biting, picking their nose, shaking their legs, or sucking their fingers. Jiwon is troubled. She thinks she's overweight, because her friends teased her about it. That's when it started — Jiwon developed a habit of biting her nails. One day, her mom called her over and wrapped bandages around her fingers to stop her from biting them. But the habit didn't go away. So her mom promised that if Jiwon worked hard to grow out her nails, she would buy her new colored pencils. Byeongkwan, secretly watching from outside the door, felt a twinge of jealousy. He thought to himself, "If I bite my nails too, will Mom buy me a present as well?" But then...